How a ransomware attack unfolds
Attackers usually get in through phishing, stolen credentials or an unpatched vulnerability in an internet facing system. Once inside, they move across the network, gain administrator rights, look for backups to disable and copy valuable data. Only then do they launch the encryption, often at night or during a weekend.
Double extortion and RaaS
Most groups now steal data before encrypting it and threaten to publish it if the ransom is not paid, so restoring from backups no longer ends the incident. Many operate as Ransomware as a Service (RaaS): developers rent the malware to affiliates who carry out the attacks and share the profits.
How to reduce the risk
The measures that make the biggest difference are MFA on email and remote access, prompt patching of exposed systems, EDR on every laptop and server with someone reviewing its alerts, and backups that are offline or immutable and regularly tested. Awareness training reduces the chance that the first click happens.
If it happens
The first steps are to isolate affected devices, preserve evidence and activate the incident response plan. Authorities such as Europol and INCIBE advise against paying, since payment does not guarantee recovery and funds further attacks. The No More Ransom project publishes free decryption tools for some ransomware families, and in Spain INCIBE offers advice through its 017 helpline. Under NIS2 and DORA, a ransomware attack is usually a reportable incident, with strict reporting deadlines.
