Ransomware is a type of malicious software that encrypts a victim’s files or locks their systems, then demands payment to restore access. It affects individuals, businesses, hospitals, schools and public bodies alike.

How it usually spreads

  • Phishing emails with harmful attachments or links.
  • Software with known security holes that has not been updated.
  • Weak or reused passwords on remote access tools.
  • Infected downloads from untrustworthy sites.

How to prepare

Keep regular backups of important data, store at least one copy offline or separate from your main network, and test that you can restore from it. Install updates promptly, use reputable security software and limit who has administrator rights.

Train people

Many attacks begin with one careless click. Short, regular reminders about suspicious emails and a simple way to report them make a real difference.

If you are hit

Disconnect affected devices from networks, avoid wiping evidence, and contact IT or security professionals and the relevant authorities. Authorities generally discourage paying, since payment does not guarantee recovery and may encourage further attacks.

Takeaway

You cannot make yourself immune, but updated systems, trained people and tested backups turn a potential disaster into a manageable setback.