Python developers targeted in phishing attacks: How to stay safe

Python developers are facing a wave of phishing attacks targeting users of the Python Package Index (PyPI). According to the Python Software Foundation (PSF), attackers are sending fake verification emails to developers whose contact information is listed in their package metadata. These emails prompt recipients to “verify” their email addresses, but instead, they lead to malicious sites designed to steal credentials. Understanding how these scams work and how to protect your account is crucial for anyone publishing Python packages.

How Python developers are being targeted

Cybercriminals are using a tactic known as typosquatting to trick Python developers. Victims receive phishing emails claiming that they need to confirm their PyPI account information. The links in these emails redirect to a website that looks nearly identical to PyPI.org, but the domain is subtly altered—often appearing as PyPJ.org or another misleading variant. Once developers enter their credentials, attackers gain access to their accounts, potentially compromising Python packages and users relying on them.

Why these phishing attacks are dangerous

A successful attack could allow hackers to upload malicious updates to popular Python packages, impacting thousands of developers and projects worldwide. These attacks highlight the importance of account security and vigilance in the software development community. For open-source ecosystems, a single compromised package can lead to supply chain attacks affecting both individuals and organizations that depend on these libraries.

How to protect your PyPI account from phishing
To stay safe, Python developers should double-check any verification email before clicking links. Always confirm that the website URL is truly PyPI.org, and consider enabling two-factor authentication (2FA) for extra security. Avoid entering credentials on unfamiliar sites, and report suspicious emails to the Python Software Foundation. Staying alert to phishing attempts can prevent account takeovers and protect the broader Python community from potential security breaches.