security
Blog
22 November 2020

WannaCry and Mirai: old malware presents new threats

Organisations protect themselves against new forms of cyber-criminality, whilst old variants of malware can still…
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News
5 November 2020

Old malware variants WannaCry and Mirai botnet remain a threat

Organisations fail to patch punctually and adequately  Leusden – Malware of about three years ago,…
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SolarWinds
NewsSOCTesorion Immunity
26 October 2020

Explosively more malware on business networks after return to the workplace

During the intelligent lockdown, the number of malware notifications on business networks decreased considerably, after…
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suncrypt
Blog
8 October 2020

Shining a light on SunCrypt’s curious file encryption mechanism

SunCrypt is a ransomware family that was first discovered in late 2019 but is currently…
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ranzy locker ransomware
Blog
1 October 2020

Ranzy Locker (ThunderX 2.0): decryption still possible in some cases!

Last week, we published a blog post on our analysis of the new ThunderX ransomware.…
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ThunderX-ransomware
Blog
21 September 2020

ThunderX ransomware: analysis and a free decryptor!

Introduction Ransomware is still one of the major cyber security threats for both businesses and…
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nemty ransomware
Blog
15 April 2020

Exploring the link between Nemty and Nefilim

A new ransomware family has appeared on the already too crowded scene over the past…
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encryption files
Blog
20 December 2019

Nemty 2.2 and 2.3: analysis of their cryptography, and a decryptor for some file types

Tesorion has previously released decryptors for the Nemty ransomware up to version 1.6. Recently, new…
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ransomware wereldwijd
Blog
24 July 2019

Sodinokibi ransomware is making many victims worldwide

Tesorion and SIDN Labs examine spread of SodinokibiThe Sodinokibi ransomware that was first discovered a…
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