The Swedish supermarket giant, Coop was the worst hit, having to close 800 of their stores worldwide. In total, more than 1500 companies were impacted by the Revil ransomware attack across 17 countries, with 60 MSPs and 800+ companies in the United States alone. On the night of July 2, 2021, as security teams logged off their servers preparing for the Independence Day weekend, Kaseya’s remote management web-based software platform, Kaseya VSA, was breached by the infamous REvil gang, resulting in the single largest ransomware supply-chain attack in the United States. The decryptor key can restore all encrypted files for free. On 21 July 2021, Kaseya shared a universal decryptor key with all MSPs and their clients who were affected by the REvil ransomware attack. Users are advised to act on these immediately to avoid becoming a victim to future attacks. As a workaround for the third client-side vulnerability, Unitrends has released firewall rules. While the vulnerability details are yet to be publicly disclosed, Kaseya has issued a patch to mitigate two of these vulnerabilities with its latest server software version 10.5.5-2. : Since July 26, 2021, news about three new zero-day vulnerabilities in Kaseya Unitrends Service, a backup and recovery add-on for Kaseya VSA, have been doing the rounds.
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