Adecco Data Breach

What happened

In March 2021, news broke of a massive data breach impacting millions of Adecco customers in South America which was subsequently sold on a popular hacking forum. The breach exposed over 4M unique email addresses as well as genders, dates of birth, marital statuses, phone numbers and passwords stored as bcrypt hashes.

Exposed data

Recommended actions

• Change your Adecco password immediately, and update it anywhere you reused the same password.
• Enable two-factor authentication on the affected account and on your critical services (email, banking).
• Watch for targeted phishing emails referencing Adecco — attackers weaponise breach data quickly.
• Stay alert for smishing (SMS phishing) and SIM-swap attempts using your phone number.
• Check whether your email address appears in this breach on haveibeenpwned.com.