OXFORD, U.K. – June 7, 2022 – Sophos, a global leader in next-generation cybersecurity, today released the “Active Adversary Playbook 2022,” detailing attacker behaviors that Sophos’ Rapid Response team saw in the wild in 2021. The findings show a 36% increase in dwell time, with a median intruder dwell time of 15 days in 2021 versus 11 days in 2020. The report also reveals the impact of ProxyShell vulnerabilities in Microsoft Exchange, which Sophos believes some Initial Access Brokers (IABs) leveraged to breach networks and then sell that access to other attackers
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