Microsoft is working to address an ongoing service issue that has intermittently prevented some users from accessing their cloud-based Exchange Online mailboxes via Outlook mobile and Mac desktop clients since Thursday.

After investigating the incident (tracked under EX1256020), Microsoft found that the root cause was a newly introduced virtual account.

On Saturday, began working to revert the change as a possible long-term solution to mitigate the impact, after failing to address the problem by restarting the affected infrastructure.

“This issue may intermittently impact some users who are attempting to access the Exchange Online service through the Outlook mobile apps or the new Outlook for Mac desktop client,” Microsoft said.

“After further assessment, we’ve confirmed that the identified change within the Exchange Online service intended to introduce a new virtual account resulted in impact. To remediate this issue, we’re disabling the change across the affected environments. Once available, we’ll provide a resolution timeline.”

While Microsoft didn’t share which regions or how many users were affected, it flagged this service outage as an incident, which usually applies to critical service issues with noticeable user impact.

One week ago, Microsoft addressed another Exchange Online outage that was preventing customers from accessing their mailboxes and calendars via Outlook on the web, Outlook desktop, Exchange ActiveSync, and other Exchange Online connection protocols.

On the same day, it fixed a separate issue causing Office.com or Microsoft 365 Copilot web sign‑in access problems due to what the company described at the time as “a high volume of traffic,” affecting the Microsoft Copilot desktop app, Copilot in Microsoft Teams, and Copilot in Office apps.

Microsoft also mitigated an Exchange Online service outage in January that intermittently blocked email via the Internet Mailbox Access Protocol 4 (IMAP4) and a similar incident in November that blocked Exchange Online access via the classic Outlook desktop client.

Malware is getting smarter. The Red Report 2026 reveals how new threats use math to detect sandboxes and hide in plain sight.

Download our analysis of 1.1 million malicious samples to uncover the top 10 techniques and see if your security stack is blinded.

Download The Report

Thinking of freshening up your home this spring? Good news — IKEA has just launched a huge spring sale with enormous savings on storage, decor, and lighting. As TechRadar’s Homes Editor, I’ve browsed through all the offers on lights and lamps to bring you my pick of the very best bargains.

It’s a particularly good time to get started with smart lighting, with deep discounts on IKEA’s already cheap smart switches (which you can use to control its smart bulbs), plus smart plugs (which let you control your existing lights remotely).

Unlimited resources truly open up every potential for ocean exploration, and the latest U-Boat Worx innovation elevates a private submarine to new heights. Its most recent offering, the updated Super Sub, has caught up with the speed of aquatic life at depth and can keep up with it. This vessel can carry a pilot and two passengers down to 300 meters at a speed of 10 knots, which is much faster than most other personal submersibles to say the least.

The Super Sub’s body was literally expanded from nose to tail, and side wings were added to increase the overall width to 3.27 metres. That’s essentially a revolutionary body shape designed to cut through the water with minimal resistance. An acrylic pressure hull in the front provides passengers with a practically unobstructed view in all directions because it is free of tanks and other equipment.Passengers relax in quality leather seats inside a climate-controlled cabin with all the amenities, including air flow controls to keep things just right, a Bluetooth music system, and even space to store chilled drinks.

LEGO Technic Deep-Sea Research Submarine Toy – Building Toy for Kids, Boys and Girls, Ages 9+ – Creative…

• SUBMARINE TOY FOR KIDS – Let young science and engineers create their own deep-sea adventures with this LEGO Technic Deep-Sea Research Submarine…
• REALISTIC FEATURES – This creative building set includes lots of realistic features like the rotating propellers and grabbing arm to help kids…
• DETAILED ACCESSORIES – The transparent cockpit opens to give access to the seat and controls; the barrel accessory can be picked up using the…

Four electric thrusters in the back provide a total of 100 kilowatts of forward power. A handful of smaller thrusters installed on the wings provide a further 12 kilowatts of control. They run on a 62-kilowatt-hour battery, which provides 8 hours of operation or around 18 kilometers at cruise speed. Hydrofoils attached to the rear thrusters may tilt to direct the force precisely, allowing the submarine to bank around curves of up to 30 degrees or climb and descend at steep angles of up to 45 degrees.

The pilot uses a joystick controller called the SHARC system, which connects the thrusters and hydrofoils for quick response at any angle. For surface navigation, there is a wireless remote called MARLIN, which allows you to position the sub over a dive site or direct it away from the support yacht before beginning your dive. The screens inside provide real-time tracking data from a wide-angle sonar capable of scanning 130 degrees ahead for 100 meters. It has auto-tweak functionality, which allows it to avoid obstacles in real time.

If you want to take a break from the controls, the sub includes automated depth and direction hold functions that will keep you stable. A maximum depth protector prevents the sub from diving deeper than 300 meters and returns it to the surface if it approaches the limit. To be safe, there is a deadman switch that will automatically surface the sub if the pilot stops responding after a certain amount of time. The backup life support system will keep you alive for 96 hours by providing oxygen, food, water, and other necessities. In an emergency, there’s a manual drop-weight release that adds extra buoyancy to assist you go back to the surface quickly, as well as a line that marks your position once you’ve resurfaced. To top it all off, the independent DNV organization certifies that all of these safety elements meet the tightest criteria after testing the Super Sub in the waters near Curaçao.

The Super Sub weighs 9,000 kg and still has room to slip into the water from a yacht deck or dock thanks to the handy sliding freeboard extension, which allows you to lift the hatch in turbulent circumstances without fear of it getting caught. Let’s not forget those strong lights on the outside; when you’re diving, they light up the seafloor or wrecks and provide a magnificent view down into the depths, transforming what was once a boring old view out to sea into a true window into the secret world beneath the waves.

When you look at the price tag, it’s roughly 5.2 million euros, or around 6 million dollars, which covers the entire vessel from the moment it leaves the factory floor to the day it’s delivered with all of the documentation completed. U-Boat Worx, the Dutch business behind dozens of these submarines since 2005, has refined its design over the years, and the latest Super Sub is their fastest model yet.
[Source]

The U.S. Federal Bureau of Investigation (FBI) warned network defenders that Iranian hackers linked to the country’s Ministry of Intelligence and Security (MOIS) are using Telegram in malware attacks.

In a flash alert issued on Friday, the FBI says Telegram is being used as command-and-control (C2) infrastructure by malware targeting journalists criticizing the Iranian government, Iranian dissidents, and various other oppositional groups worldwide.

The bureau linked these attacks to the Iranian-linked and pro-Palestinian Handala hacktivist group (also known as Handala Hack Team, Hatef, Hamsa) and the Iranian state-sponsored Homeland Justice threat group tied to Iran’s Islamic Revolutionary Guard Corps (IRGC).

In these attacks, the Iranian hackers are using social engineering to infect targets’ devices with Windows malware that enables them to exfiltrate screenshots or files from compromised computers.

“Due to the elevated geopolitical climate of the Middle East and current conflict, the FBI is highlighting this MOIS cyber activity,” the bureau said.

“This malware resulted in intelligence collection, data leaks, and reputational harm against the targeted parties. The FBI is releasing this information to maximize awareness of malicious Iranian cyber activity and provide mitigation strategies to reduce the risk of compromise.”

This warning was published one day after the FBI seized four domains (handala-redwanted[.]to, handala-hack[.]to, justicehomeland[.]org, and karmabelow80[.]org).

The websites available via the seized clearnet domains were used by the Handala and Homeland Justice threat groups, and a third threat actor tracked as Karma Below, during their attacks and to leak sensitive documents and data stolen in cyberattacks targeting victims in the United States and around the world.

These actions follow Handala’s cyberattack on U.S. medical giant Stryker, in which they factory reset approximately 80,000 devices (including employees’ personal computers and mobile devices managed by the company) using the Microsoft Intune wipe command after compromising a Windows domain administrator account and creating a new Global Administrator account.

Last week, the FBI also warned that Russian intelligence-linked threat actors are targeting Signal and WhatsApp users in phishing campaigns that have already compromised thousands of accounts.

“The activity targets individuals of high intelligence value, such as current and former U.S. government officials, military personnel, political figures, and journalists,” said the FBI  in a public service announcement issued after Dutch and French cybersecurity authorities described similar account-hijacking operations.

Malware is getting smarter. The Red Report 2026 reveals how new threats use math to detect sandboxes and hide in plain sight.

Download our analysis of 1.1 million malicious samples to uncover the top 10 techniques and see if your security stack is blinded.

Download The Report

• Salesforce acquired Clockwise’s workers, but not the company itself
• Clockwise customers advised to migrate to Reclaim
• Agentforce annual recurring revenue up 169%

Clockwise CEO Matt Martin has announced via a LinkedIn post that Salesforce will be hiring the startup’s team as part of its broader Agentforce push.

Because Salesforce is acquiring the workers and not the company, Clockwise has confirmed it will be shutting down from March 27, 2026, leaving customers having to find an alternative.