The blog post discusses various infection methods used by attackers to spread malicious software packages, as unveiled by the JFrog Security research team. It highlights five key techniques: typosquatting, where attackers register packages with names similar to popular ones to exploit typos; masquerading, which involves creating trojan packages by duplicating legitimate package names and metadata with slight malicious modifications; trojan packages, where functional libraries hide small, often obfuscated, malicious codes; dependency confusion, which takes advantage of package managers' preference for high-version numbers to distribute malicious packages; and software package hijacking, where attackers take control of legitimate packages by compromising maintainer accounts or through phishing and domain takeovers. The blog emphasizes the increasing sophistication of these attacks and the importance of security measures such as two-factor authentication to protect against them.