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Ransomware is a type of malicious software, or malware, designed to deny access to a computer system or data until a ransom is paid. Ransomware typically spreads through phishing emails or by unknowingly visiting an infected website. Ransomware can be devastating to an individual or an organization.
1. New ransomware variants appear on a regular basis.
Always keep your security software up to date to protect yourself against them.
2. Keep your operating system and other software updated.
Software updates will frequently include patches for newly discovered security vulnerabilities that could be exploited by ransomware attackers.
3. Email is one of the main infection methods.
Be wary of unexpected emails, especially if they contain links and/or attachments.
4. Be especially wary of any Microsoft Office email attachment that advises you to enable macros to view its content.
Unless you are absolutely sure that this is a genuine email from a trusted source, do not enable macros and instead immediately delete the email.
5. Backing up important data is the single most effective way of combating ransomware infection.
Attackers have leverage over their victims by encrypting valuable files and leaving them inaccessible. If the victim has backup copies, they can restore their files once the infection has been cleaned up. However, organizations should ensure that backups are appropriately protected or stored offline so that attackers can’t delete them.
6. Using cloud services could help mitigate ransomware infection, since many retain previous versions of files, allowing you to “roll back” to the unencrypted form.
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