Cyberattacks are actions carried out by computer hackers aimed at damaging a system, accessing confidential information or obtaining money. This article presents the 5 most frequent cyberattacks: malicious software (Macro Malware), email phishing (Email Phishing and BEC), text message phishing (Smishing), phone phishing (Vishing) and ransomware. Learning to detect these attacks is the best way to avoid them.