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Microsoft Exchange “Hafnium” Hack: Recommended Steps
March 10, 2021
Typical zero-day attacks usually take place using a single vulnerability. However, widespread attacks by Hafnium (rumored to be state-run) have taken advantage of four previously unknown vulnerabilities in Microsoft’s “on-premise” versions of Exchange Server.
Tens of thousands of companies are at risk in the US and internationally. Time is of the essence and action must be taken immediately to protect your data.
Monitor Microsoft and accredited news organizations. As with any open security investigation, it’s critical to monitor Microsoft and news organizations for changes in protective measures and additional risks that may have been provided to the public.
Our understanding of the nature and magnitude of the Hafnium attack is evolving; it’s possible the hack might prove worse than the SolarWinds attack. As a result, business and security leaders should err on the side of caution. According to Christopher Krebs, the former director of the US Cybersecurity and Infrastructure Agency, organizations using Microsoft Exchange should assume they were hacked sometime between February 26 and March 3.
If you believe or have confirmed that your business has been compromised by this or any other Exchange vulnerability, please contact Optiv today at email@example.com. We can quickly initiate the defensive measures above and deploy additional stop-gap measures to protect your data, users and customers.
October 16, 2019
The 2019 CTIE shows security practitioners must be familiar with their environments and global trends.
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