Hermes ransomware distributed to South Koreans via recent Flash zero-day

An uncommon exploit kit adds a fresh Flash Player exploit to distribute the Hermes ransomware in South Korea.

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Encryption 101: ShiOne ransomware case study

In this case study on ShiOne ransomware, part of our Encryption 101 series, we will be reviewing the encryption process line by line and showing the different methods ransomware can use to encrypt files.

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Encryption 101: a malware analyst’s primer

A primer on encryption mechanisms and how they are exploited by malware authors, including an introduction to encryption and the main methods used to encrypt ransomware.

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A week in security (January 29 – February 04)

A compilation of notable security news from January 28 to February 4, featuring PUPs, a new Mac malware, two new ransomware variants, robocalls, and more.

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Ransomware’s difficult second album

We take a look at the difficulties faced by ransomware authors as they try to adapt and evolve to the next form of stealthier Bitcoin hoarding: cryptocurrency mining.

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