Two solutions exist to protect against these attacks: prevent modifications to sensitive files, and make frequent backups of these files This software has appeared in recent years and takes the user's personal data hostage, which ends up being encrypted, with a ransom demand.
A shield against ransomware, also known as ransomware. An integrated firewall remains an effective way to monitor incoming and outgoing connections on one's network, and to specify different profiles for a public or corporate network, for example. Phishing is a pernicious method because it relies on the user's inattention or naivety, so it can target any system, even secure ones, to steal personal or banking information An anti-phishing module to detect fraudulent sites or emails that masquerade as legitimate services. An anti-spyware module protects the user from spyware that can hide and steal personal data without their knowledge. This is a way of identifying threats that are still unknown to the basics Behavioural or heuristic analysis looks for patterns of suspicious behaviour that do not correspond to normal system usage. 
Today, the cloud makes it possible to deport them, lightening the load on the antivirus software
Signature databases identify known threats according to a signature.
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