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Ukraine’s largest grocery store chain, ATB, confirmed that it was hit by a cyberattack after hackers posted an extortion demand on its website.

Microsoft has released out-of-band security updates to address a high-severity flaw in Microsoft Exchange Server that could allow an attacker to escalate privileges under certain conditions.

The vulnerability, tracked as CVE-2026-96940, is rated 8.8 on the CVSS scoring system.

“Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a

A blank field. A public repo. One reply to an email. A box left exposed. None of this sounds dramatic, which is partly the problem. This week’s threats keep finding leverage in small things that were easy to overlook.

There are actively exploited bugs in the mix, cleaner intrusion paths, smarter automation, and a long patch list waiting behind them. Some attacks are getting more capable. Others

Every modern enterprise depends on credentials. This is how humans, systems, and now AI, all connect to data, services, and each other securely. GitGuardian helps secure that credential layer through three connected capabilities: Detect, Remediate, and Prevent. The journey starts with detection, because organizations first need to understand what credentials exist, where they live, and what they

Threat actors have been observed attempting to exploit a now-patched critical security flaw impacting the Realtek Jungle software development kit (SDK) to deploy a botnet malware called Cling.

“Cling is notable not because it introduces a new propagation technique, but because it repurposes ordinary STUN behavior into a practical command-and-control channel,” Nozomi Networks said in a report

CVE-2026-61500 allows attackers to recover the session-cookie signing key and gain administrative access and RCE.

The post Exploitation Hits Rejetto HFS Vulnerability Discovered by AI  appeared first on SecurityWeek.

More than 730 cyber breaches affected over 270 million Americans last year, costing an average of $10 million per breach.

The post Senate Passes Bipartisan Bill to Strengthen Healthcare Cybersecurity appeared first on SecurityWeek.

Known as Rey, the suspect is reportedly helping the FBI identify and locate other members of the extortion group.

The post Alleged ShinyHunters Leader Arrested in Jordan appeared first on SecurityWeek.

Citrix has confirmed that a new zero-day vulnerability, CVE-2026-88779, emerged just days after two other exploited flaws were patched.

The post Exploitation of Citrix NetScaler Zero-Day Hits Appliances Patched Days Earlier appeared first on SecurityWeek.

Apple has announced that it’s taking steps to tighten controls around a macOS setting called Full Disk Access (FDA) due to security risks posed by artificial intelligence (AI) agents.

“Some developers are using Full Disk Access in ways that could put users at risk, exposing everything on their systems—including files, mail, messages, and even browsing history – without users’ full knowledge