CySec blog

Ransomware — articles and guides

All CySec articles about Ransomware: current vulnerabilities, step-by-step guides and practical protection advice for businesses in Armenia.

The 3-2-1 backup rule: how to survive ransomware and hardware failure

Most companies have backups — until the day they need to restore. Here is a simple, proven model that keeps your data recoverable.

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Ransomware attack: what to do in the first hour

The first hour decides how much you lose. A simple, calm plan for the moment screens show a ransom note.

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A one-page incident response plan for a small company

You do not need a 50-page policy. A single page that everyone can find during an incident is far more useful. Here is what to put on it.

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Veeam Backup & Replication (CVE-2024-40711): when attackers target your backups first

A critical flaw in a popular backup server allowed code execution without a password and was used by ransomware groups. How to protect the backup system itself.

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VMware ESXi OpenSLP (CVE-2021-21974): patched in 2021, mass-exploited by ESXiArgs in 2023

A two-year-old fix that many hosts never installed. In February 2023 the ESXiArgs ransomware encrypted thousands of exposed ESXi servers.

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EternalBlue (MS17-010, CVE-2017-0144): the SMBv1 flaw behind WannaCry and NotPetya

Microsoft patched it in March 2017. Two months later, WannaCry hit unpatched networks worldwide. The lessons still apply to every office network.

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