Ministers are turning up the heat on Britain’s biggest companies to fortify their cyber-defences, warning that a new generation of artificial intelligence tools, including Anthropic’s controversial Mythos model, risks unleashing a fresh wave of sophisticated hacking against UK plc.

In a pointed intervention, Baroness Lloyd of Effra (pictured), the cybersecurity minister, has written to almost 200 business leaders pressing them to back a new “cyber-resilience pledge” designed to drag boardrooms into the front line of digital defence.

To sign up, companies must make cybersecurity an explicit board-level responsibility, enrol with the National Cyber Security Centre’s early-warning service, and require the “Cyber Essentials” certification throughout their supply chains. The pledge will be formally launched in the summer and is intended to give investors, customers and trading partners a clearer benchmark by which to judge a business’s digital defences.

The push comes against a febrile backdrop. Anthropic, the San Francisco-based AI developer, revealed last week that it had decided not to release Mythos, a model honed for cybersecurity work, because of its uncanny ability to sniff out vulnerabilities in software. Instead, the company has quietly handed it to 40 US technology firms to help them shore up their defences.

While some industry watchers have dismissed the move as a marketing flourish, Wall Street, the City and financial regulators are taking it seriously. Britain’s biggest high-street lenders, including Barclays, Lloyds and NatWest, are understood to be in talks with Anthropic about gaining access to the model.

Andrew Bailey, governor of the Bank of England, has gone so far as to suggest that Anthropic may have “found a way to crack the whole cyber-risk world open”, an unusually colourful assessment from Threadneedle Street.

The UK’s AI Security Institute, one of the few bodies outside the United States to have put Mythos through its paces, described the model as a “step up” in capability. It concluded that Mythos was “at least capable of autonomously attacking small, weakly defended and vulnerable enterprise systems where access to a network has been gained”, though it stopped short of saying whether the model could breach better-fortified targets.

For SMEs, the assessment is uncomfortable reading. The lion’s share of “small, weakly defended” enterprise systems sits squarely in the small and medium-sized business community, where IT budgets are tight and dedicated security teams a rarity.

Dan Jarvis, the security minister, will press the pledge at this week’s CyberUK conference in Glasgow, where he is expected to argue that the country still suffers from a yawning perception gap between digital and physical crime. Drawing on the recent ransomware attack that crippled Jaguar Land Rover, Jarvis will tell delegates that had the same damage been done by “an old-school physical attack, it would have been the equivalent of hundreds of masked criminals turning up to dealerships across the country, breaking glass, smashing up computers and driving cars right off the forecourt”.

His message: “There is no real difference between them; they are both brazen acts of criminality.”

Lloyd struck a similarly urgent tone, telling business leaders: “The cyber threat facing UK businesses is serious, growing and evolving fast. AI is giving attackers capabilities that would have seemed extraordinary just a year ago and no organisation can afford to be complacent. Cyber-resilience isn’t just a technical issue; it’s a board responsibility and we’re asking every boardroom in Britain to prove they treat it as one.”

Despite years of warnings from Whitehall and the NCSC, the take-up of basic cyber hygiene measures remains stubbornly low. Just 56,000 Cyber Essentials certificates were issued in 2025, covering roughly 1 per cent of UK businesses, a figure that ought to give every chair, chief executive and finance director pause for thought.

Help, of a sort, is on the way. The Cyber Security and Resilience Bill, currently working its way through Parliament, will compel firms operating in critical sectors to raise their game. But ministers appear unwilling to wait for the legislation to land before applying pressure on the boardrooms they believe should already be ahead of the curve.

For SME owners and directors, the practical takeaway is unambiguous. AI-powered attack tools are no longer a theoretical worry kept at bay by the world’s best-resourced criminals. They are, increasingly, a clear and present danger, and a signature on a government pledge will count for little if the basics are not in place behind the boardroom door.

Amy Ingham

Amy is a newly qualified journalist specialising in business journalism at Business Matters with responsibility for news content for what is now the UK’s largest print and online source of current business news.

SAN FRANCISCO — Microsoft Outlook is not experiencing a widespread outage on April 27, 2026, with core email, calendar and Teams integration services operating normally for the vast majority of users despite scattered reports of slow loading, sign-in delays and minor disruptions that have frustrated some during peak business hours.

Microsoft’s official service health dashboard and independent monitors like Downdetector show no major global incidents as of late Monday. While some users reported temporary issues with the new Outlook for Windows and classic desktop version — particularly after recent Windows updates — the problems appear localized and tied to individual network conditions, cached credentials or ongoing post-update adjustments rather than a platform-wide failure.

The latest wave of complaints began surfacing earlier in April following the rollout of Windows 11 25H2 updates, with some users experiencing freezing when new emails arrive or difficulties launching the app. Microsoft has acknowledged these issues in support documentation and is actively rolling out fixes.

Current Status Breakdown

As of Monday afternoon, Microsoft 365 service health indicators for Outlook.com, Exchange Online and the Outlook desktop client are green across most regions. The company’s status page reports no active incidents affecting email delivery, calendar syncing or basic functionality. However, a small percentage of users continue to encounter:

• Intermittent sign-in prompts or authentication delays.
• Slow performance when opening large mailboxes or shared folders.
• Freezing in the new Outlook app after receiving new messages.

These issues have been most commonly reported by enterprise users on Windows 11 who recently applied the April 2026 security updates. Microsoft has advised affected users to run the built-in repair tool or temporarily switch back to the classic Outlook view while patches are deployed.

Recent History of Outlook Stability

Outlook and broader Microsoft 365 services experienced a notable but short-lived outage earlier in April 2026 that affected sign-ins and Teams integration. That incident was quickly resolved, and the company has since focused on stability improvements. The current scattered reports are significantly smaller in scale and do not appear to stem from the same root cause.

Microsoft has postponed the full forced migration to the new Outlook for enterprise users until March 2027, giving organizations more time to prepare and reducing pressure on the system during the transition.

Troubleshooting Guidance

Users facing problems today can try these proven steps while Microsoft continues backend optimizations:

• Restart the Outlook app completely or reboot the device.
• Clear the app cache through settings or by running the repair tool in Windows.
• Switch between the new Outlook and classic view if both are installed.
• Check internet connection stability and try disabling VPNs temporarily.
• Ensure Windows and Outlook are fully updated, as recent patches have addressed many reported issues.

For enterprise administrators, Microsoft recommends monitoring the Microsoft 365 admin center for tenant-specific alerts and applying any pending updates.

Impact on Users and Businesses

Even minor disruptions can significantly affect productivity for the hundreds of millions who rely on Outlook daily for email, scheduling and collaboration. Sales teams, customer service departments and remote workers have reported delays in responding to clients, while some organizations shifted temporarily to web-based alternatives or mobile apps during peak glitch periods.

Small businesses and individual users appear less affected than large enterprises with complex shared mailbox setups. Microsoft has emphasized that the vast majority of users worldwide are experiencing normal service.

Microsoft’s Response and Ongoing Improvements

Microsoft has been proactive in addressing feedback from the April Windows updates. The company continues to refine both the classic and new Outlook experiences, with a focus on performance, reliability and user interface consistency. Regular updates are being pushed to mitigate the freezing issues reported by some users.

The delay in forcing the new Outlook migration reflects the company’s recognition that many organizations still prefer the familiar desktop client and need more time for testing and training. This measured approach has been welcomed by IT professionals managing large deployments.

Broader Context in 2026

As Microsoft continues evolving its productivity suite, Outlook remains central to the Microsoft 365 ecosystem. The company faces ongoing pressure to balance innovation with stability, especially as competition from Google Workspace and other platforms intensifies. Reliability during peak business hours is critical for maintaining user trust.

While today’s scattered issues have caused frustration for some, they do not represent a systemic failure. Most users checking service status reports will find Outlook fully operational. Those still experiencing problems are encouraged to use the official troubleshooting tools or contact Microsoft support for personalized assistance.

As the workday continues, Microsoft engineers are actively monitoring telemetry and deploying targeted fixes where needed. For the overwhelming majority of users, email, calendar and collaboration tools are functioning normally on April 27. The company remains committed to delivering a reliable experience as it refines Outlook for the future.

Google co-founder Sergey Brin slammed the proposed billionaire tax in California, likening it to the socialism that he fled with his family from the former Soviet Union.

Brin is one of the billionaires who relocated out of the Golden State to avoid the potential wealth tax that’s expected to appear on California voters’ ballots this fall. The proposal would impose a one-time 5% tax on residents whose net worth exceeds $1 billion. 

Assets covered by the tax may include businesses, securities, art, collectibles, and intellectual property – though real property, pensions and certain retirement accounts would be exempt.

“I fled socialism with my family in 1979 and know the devastating, oppressive society it created in the Soviet Union. I don’t want California to end up in the same place,” Brin said in a statement to The New York Times regarding a story by the outlet that discussed his move.

CALIFORNIA BILLIONAIRE TAX NEARS BALLOT AFTER UNION COLLECTS NEARLY DOUBLE REQUIRED SIGNATURES

Google co-founder Sergey Brin said that he’s concerned about California’s drift toward socialism. (Jamie McCarthy/WireImage via Getty Images)

The proposed wealth tax applies retroactively to Californians who were residents of the state at the start of 2026, which prompted Brin to move out of the state late last year.

The Times reported, citing a person familiar with the arrangement, that Brin moved to the Nevada side of Lake Tahoe and is spending every other week at Google’s headquarters in California.

THE $1,600 LETTUCE: CALIFORNIA GROWERS WARN OF ‘MASTER PLAN’ STRANGLING FAMILY FARMS

The outlet previously reported that in December, an entity connected to Brin terminated or relocated 15 California limited liability companies (LLCs) out of the state, while several were converted into Nevada entities.

Advocates argue it would bring in significant funding for public services, while critics have warned it could drive job creators out of the state. If enacted, the tax bill would be due in 2027, with taxpayers having the option of spreading payments over five years.

OIL PRODUCER ORG SHREDS CALIFORNIA DEM FOR BLAMING IRAN WAR FOR HIS DISTRICT’S GAS PRICES

Brin relocated assets and moved out of California in advance of the cut-off date for the proposed wealth tax. (Lionel Hahn/Getty Images)

Brin’s opposition to the wealth tax on billionaires prompted him to work with other like-minded Californians and build support for an effort to defeat the measure.

The Times reported that Brin formed a pair of nonprofit groups as part of his political engagement around the wealth tax proposal, putting $57 million into Building a Better California over the last four months.

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CAIRO — Iran has proposed ending its chokehold on the Strait of Hormuz in exchange for the United States lifting its naval blockade and agreeing to a permanent end to the ongoing war, two regional officials with knowledge of the offer said Monday, as Tehran’s foreign minister visited Moscow amid stalled peace efforts.

The new proposal, conveyed to the White House through Pakistani mediators, would delay talks on Iran’s nuclear program until after a ceasefire is solidified and the critical waterway is reopened to international shipping, the officials told The Associated Press on condition of anonymity because the negotiations are private.

The Strait of Hormuz, a narrow chokepoint at the mouth of the Persian Gulf, handles about one-fifth of the world’s traded oil and liquefied natural gas. Iran’s restrictions on the waterway, combined with the U.S. blockade of Iranian ports, have severely disrupted global energy markets and driven oil prices higher since the conflict escalated earlier this year.

Iranian Foreign Minister Abbas Araghchi, who was in Russia on Monday for consultations, described the visit as an opportunity to coordinate with Moscow on ending the war with Israel and the United States. Iranian officials have repeatedly said the strait will remain closed as long as the U.S. maintains its blockade, calling it a violation of the fragile ceasefire.

U.S. Position Remains Firm

President Donald Trump has insisted that any deal to reopen the strait must include concrete steps to dismantle Iran’s nuclear program. In recent statements, Trump has described the current situation as unsustainable and warned that prolonged closure of the strait would have devastating economic consequences worldwide.

White House officials familiar with the proposal expressed skepticism that the U.S. would accept terms that defer nuclear discussions. Trump has repeatedly said Iran will not be allowed to develop nuclear weapons and has highlighted the success of U.S. sanctions, which he claims are costing Iran hundreds of millions of dollars daily.

The proposal comes as Pakistan-mediated talks between Washington and Tehran have stalled. A temporary ceasefire in Lebanon provided a brief window for diplomacy, but deep disagreements over the nuclear issue and the blockade have prevented a broader agreement.

Economic Toll Mounts

The dual restrictions on the strait have created a maritime standoff that has reduced oil flows and driven up global energy prices. Shipping companies have largely avoided the area due to insurance risks, drone threats and Iranian toll demands on passing vessels. Some Iranian oil has continued to move through shadow fleet operations, but overall volumes are significantly lower.

Oil prices rose modestly Monday on the news of the Iranian proposal but remain volatile. Energy analysts warn that a prolonged closure could push crude above $120 per barrel, triggering broader inflation and economic pain worldwide.

Human and Regional Impact

The standoff has affected millions beyond energy markets. Fishermen in the Persian Gulf have seen their livelihoods disrupted, while countries dependent on Gulf oil imports — including major Asian economies — face higher costs and supply uncertainty. Regional allies on both sides have expressed concern about escalation.

Iranian officials have accused the U.S. of “piracy” through its blockade, while Washington maintains it is a necessary response to Iranian aggression and attempts to control the vital waterway. Both sides have seized vessels in recent weeks, raising fears of miscalculation leading to direct naval confrontation.

Path Forward Unclear

The latest Iranian offer separates the immediate humanitarian and economic issue of reopening the strait from the long-term security question of its nuclear program. Pakistani diplomats, who have served as intermediaries, are expected to continue shuttling proposals between the two sides in the coming days.

U.S. officials have not publicly responded to the specific terms but have reiterated Trump’s demand for a comprehensive deal that addresses Tehran’s nuclear ambitions, regional proxies and ballistic missile program.

Analysts say the proposal reflects Iran’s growing economic pressure from sanctions and the blockade, while also testing the Trump administration’s willingness to prioritize energy market stability over its maximum-pressure strategy.

As talks continue behind the scenes, the world watches the narrow 21-mile-wide strait — one of the most strategically vital waterways on the planet — where any misstep could send shockwaves through the global economy. For now, the dual blockade remains in place, ships stay away, and diplomats search for a breakthrough that could ease one of the most dangerous standoffs in recent memory.

NEW YORK — The Dow Jones Industrial Average opened modestly lower Monday, slipping 5.35 points or 0.011% to 49,225.36 in early trading as investors weighed mixed economic signals, persistent geopolitical tensions and anticipation of key inflation data later this week.

The blue-chip index showed limited movement in the first hours of the session, reflecting a wait-and-see approach on Wall Street. The S&P 500 and Nasdaq Composite also traded in narrow ranges, with technology shares providing some support while energy and financial stocks lagged.

Monday’s subdued open comes after a strong April for U.S. equities, with the Dow recently hovering near all-time highs. However, traders appeared cautious amid ongoing uncertainty over Federal Reserve policy, Middle East developments and the pace of economic growth.

Market Drivers on Monday

Several factors contributed to the cautious tone. Investors are looking ahead to Wednesday’s release of the Federal Reserve’s preferred inflation gauge, the Personal Consumption Expenditures (PCE) price index. Any surprises in the data could influence expectations for interest rate cuts later this year.

Geopolitical risks also weighed on sentiment. Tensions in the Middle East continue to support oil prices, benefiting energy companies but raising concerns about broader inflation. Meanwhile, corporate earnings season enters its final stages, with several major companies set to report this week.

Sector performance was mixed in early trading. Technology stocks edged higher on continued optimism around artificial intelligence, while defensive sectors like utilities and consumer staples showed resilience. Energy shares faced pressure as oil prices pulled back slightly from recent gains.

Broader Economic Context

The U.S. economy has shown remarkable resilience despite higher interest rates, but cracks are beginning to appear in some areas. Consumer spending remains solid but is showing signs of moderation, while business investment has cooled. The labor market continues to add jobs but at a slower pace than in previous years.

Analysts say the Federal Reserve is likely to hold rates steady at its next meeting but could signal openness to cuts if inflation continues trending toward the 2% target. Markets are currently pricing in roughly two rate cuts by the end of 2026.

Global markets offered little clear direction overnight. European stocks traded mixed, while Asian markets closed mostly lower. China’s economic data continued to show a gradual recovery but with persistent challenges in the property sector.

Investor Sentiment and Strategy

Many portfolio managers are adopting a selective approach. Quality stocks with strong balance sheets and consistent earnings growth are favored, while highly valued technology names face increased scrutiny. Dividend-paying stocks and those with exposure to domestic consumption are also attracting interest as hedges against uncertainty.

Volatility remains relatively low, with the VIX — often called Wall Street’s fear gauge — hovering near recent averages. This suggests investors are not overly alarmed but are proceeding with caution.

Corporate News in Focus

Several companies are in the spotlight Monday. Earnings reports from major firms later this week could set the tone for the remainder of the earnings season. Analysts expect overall corporate profits to show moderate growth, though guidance and outlooks will be closely watched.

Merger and acquisition activity also remains a theme, with several large deals rumored in the technology and healthcare sectors. Any breakthroughs could provide a lift to sentiment.

Technical Outlook

From a technical perspective, the Dow Jones remains in a well-established uptrend but is approaching resistance levels near its recent highs. A decisive break above 49,500 could signal further upside, while a drop below recent support around 48,800 might open the door to more significant pullbacks.

Analysts say the index is likely to trade in a range until clearer signals emerge from economic data and corporate earnings.

What to Watch This Week

Beyond Wednesday’s PCE data, investors will also monitor new home sales figures and consumer confidence readings. Any signs of economic softening could boost expectations for Federal Reserve action, while stronger data might reinforce a more patient approach from policymakers.

Earnings from major banks and industrial companies later in the week will provide further insight into the health of the corporate sector.

Longer-Term Perspective

Despite Monday’s modest dip, the Dow Jones Industrial Average remains up significantly year-to-date, reflecting optimism about artificial intelligence, corporate earnings resilience and eventual monetary easing. However, risks remain, including geopolitical flashpoints, persistent inflation in certain sectors and the potential for policy shifts.

For individual investors, financial advisers recommend maintaining diversified portfolios and avoiding reactive decisions based on daily market movements. Long-term fundamentals, rather than short-term noise, should guide investment strategy.

As trading continues Monday, all eyes remain on incoming economic data and corporate developments that could influence the market’s direction in the weeks ahead. The Dow’s slight opening decline reflects caution rather than alarm, with investors carefully positioning themselves ahead of potentially market-moving events later this week.

Even President Trump’s toughest critics should acknowledge his grace and courage under fire. He showed it once again in his presser Saturday night after the shooting at the White House Correspondents Association Dinner.

If I can borrow from my friend Miranda Devine, he praised the Chairman of the Correspondents Association, who has been a severe Trump critic. He was magnanimous about the Secret Service, though they’re going to have to answer some tough questions in the weeks ahead. And he was self-effacing about the likelihood that the shooter was gonna go for him. He said: “it’s always shocking when something like this happens. It’s happened to me a little bit. And, that never changes the fact we’re sitting right next to each other.” Mr. Trump added that “if you take presidents, it’s 5.8 percent and about 8 percent are shot at. So nobody told me this was such a dangerous profession.” He concluded: “It’s dangerous. It’s dangerous stuff, whether it’s here or someplace else. No country is immune.” 

That’s grace under fire. Standing in his formal attire, with his bow tie in place, the president holds an extraordinary news conference. Hat tip to my friends at The New York Sun for pointing this out.

It appeared to be the third assassination attempt in two years. No president has faced that. My former boss, President Reagan was nearly killed by an assassin’s bullet in 1981. And far as I know, there have been no other assassination attempts until Butler, Pennsylvania in 2024.

Mr. Trump had a thought on this as well. Take a listen: “Well, you know, I’ve studied assassinations, and I must tell you, the most impactful people, the people that do the most. You take a look at the people. Abraham Lincoln.” Yet, he added, “the people that do the most, the people that make the biggest impact, they’re the ones that they go after.”

Faith Bottum of the Wall Street Journal’s editorial page notes that 8.5 percent of Presidents have died by assassination. Mr. Trump, though, has said time and again, including during his presser Saturday night, that he’s not worried about assassination and in fact wanted the dinner to continue that night before the Secret Service ruled it out. Yet that president has also said many times that he cannot let the criminal class or the political crazies shut down freedom of speech, or any political rallies for that matter. And of course he wanted a redo of the correspondents dinner in 30 days, or whenever it’s possible.

By the way, hat tip to Ms. Bottum for calling Mr. Trump brave and courageous. The Journal’s vaunted editorial page has been especially tough and critical of Mr. Trump. The president called for unity and it’s a great thought, but somehow in this period of our history it just doesn’t seem realistic.

In my lifetime I witnessed the assassination of JFK and then Martin Luther King and then Senator Robert F. Kennedy. These were great national tragedies. There was an assassination attempt against President Ford in 1975. Then the Reagan attempt in 1981 and then the multiple attempts on Mr. Trump. I don’t know what’s happened to the country that I love. I know America can do better. Let us hope that somehow it will.