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Oct 18, 2021
Grief Ransomware Gang Claims 41 New Victims, Targeting Manufacturers; Municipalities; & Service Companies in U.K. & Europe
Grief Operators Earned an Estimated 8.5 Million British Pounds in Four Months Key Findings: The Grief Ransomware Gang (a rebrand of the DoppelPaymer Ransomware Group) claims to have infected 41 new victims between May 27, 2021—Oct. 1, 2021 with their ransomware.Over half the companies listed on Grief’s underground leak site are based in the U.K. and Europe. The Grief Ransomware Gang appears to…
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eSentire Launches MDR with Microsoft Azure Sentinel Extending Response Capabilities Across Entire Microsoft Security Ecosystem
Waterloo, ON – Oct. 12, 2021 -- eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announced the expansion of its award-winning MDR services with Microsoft Azure Sentinel, as part of its integration with the complete Microsoft 365 Defender and Azure Defender product suites supporting Microsoft SIEM, endpoint, identity, email and cloud security services.…
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Security advisories — Feb 27, 2019

Spectre Variants 1.1 & 1.2

Two new variants of the Spectre side channel attack have been discovered, neither of which are mitigated by previous Spectre security patches. eSentire Threat Intelligence assesses with medium confidence that, if weaponized, these vulnerabilities would represent a significant threat to clients. A successful attack using Spectre variant 1.1 may result in the theft of sensitive information such as usernames and passwords. The successful use of variant 1.2 could allow an attacker to overwrite ‘read-only’ data, effectively escaping a sandbox environment. In order for exploitation to occur, Spectre v 1.1 and v 1.2 require malicious code to already be on the system. The complexity and requirement of the previous infection make the weaponization of these vulnerabilities unlikely in the near future.

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References:

[1] Speculative Buffer Overflows: Attacks and Defenses
https://people.csail.mit.edu/vlk/spectre11.pdf