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Charles Brook
Threat Intelligence Specialist, Tessian
Charles is a Threat Intelligence Specialist with a strong background in providing threat analytics for managed security services. He also has experience working with threat monitoring teams to build security-focused use-cases aimed at monitoring network data for indicators of compromise, and is passionate about tracking security trends.
All posts by Charles Brook 4
24 May 2022
Analysis of Executive Impersonation Burst Attack
In May 2021 Tessian Defender flagged a series of emails sent to a global law firm. The emails were attempting to impersonate a senior partner at the firm and targeted a list of other partners. Tessian's Research & Intelligence team analyzed an executive impersonation burst attack that was detected and prevented by Tessian Defender.
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08 March 2022
Vendor Email Compromise: Analysis of an Account Takeover Attack
In March 2021 Tessian Defender flagged an email received by one of our customers from one of their trusted vendors. The vendor had suffered from an account takeover when an attacker used compromised credentials to login to the mailbox of one of their employees and send out malicious emails.
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04 February 2022
Cyber Criminals Leverage Temporary Block on PayPal Account in Phishing Attack
Tessian’s threat intelligence researchers detected a relatively sophisticated phishing attempt impersonating PayPal. We break down the elements of the attack and explain how to spot other scams.
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Cybercriminals Take Advantage of Mass Unemployment in Phishing Scams
The global COVID-19 pandemic has wreaked havoc on job markets. In the US, the unemployment rate stands at 6.2 percent and in the UK, it’s estimated that around 2.2 million people, or 6.5% of all workers, could be unemployed at the end of the year. Cybercriminals are taking note.
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