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News alert: SquareX discloses nasty browser-native ransomware that’s undetectable by antivirus

The Last Watchdog

Mar 28, 2025, CyberNewswire — From WannaCry to the MGM Resorts Hack, ransomware remains one of the most damaging cyberthreats to plague enterprises. Traditionally, the primary target of ransomware has been the victims device. Palo Alto, Calif.,

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On the Irish Health Services Executive Hack

Schneier on Security

It had no documented cyber incident response runbooks or IT recovery plans (apart from documented AD recovery plans) for recovering from a wide-scale ransomware event. Antivirus software triggered numerous alerts after detecting Cobalt Strike activity but these were not escalated.

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Inside Ireland’s Public Healthcare Ransomware Scare

Krebs on Security

The consulting firm PricewaterhouseCoopers recently published lessons learned from the disruptive and costly ransomware attack in May 2021 on Ireland’s public health system. The unusually candid post-mortem found that nearly two months elapsed between the initial intrusion and the launching of the ransomware.

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110 Nursing Homes Cut Off from Health Records in Ransomware Attack

Krebs on Security

A ransomware outbreak has besieged a Wisconsin based IT company that provides cloud data hosting, security and access management to more than 100 nursing homes across the United States. based Saint Francis Healthcare System began notifying patients about a ransomware attack that left physicians unable to access medical records prior to Jan.

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Kasseika ransomware uses antivirus driver to kill other antiviruses

Bleeping Computer

A recently uncovered ransomware operation named 'Kasseika' has joined the club of threat actors that employs Bring Your Own Vulnerable Driver (BYOVD) tactics to disable antivirus software before encrypting files. [.]

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Adventures in Contacting the Russian FSB

Krebs on Security

In the process of doing so, I encountered a small snag: The FSB’s website said in order to communicate with them securely, I needed to download and install an encryption and virtual private networking (VPN) appliance that is flagged by at least 20 antivirus products as malware. The FSB headquarters at Lubyanka Square, Moscow.

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LockFile Ransomware uses a new intermittent encryption technique

Security Affairs

Recently emerged LockFile ransomware family LockFile leverages a novel technique called intermittent encryption to speed up encryption. LockFile ransomware gang started its operations last month, recently it was spotted targeting Microsoft Exchange servers using the recently disclosed ProxyShell vulnerabilities.