Infostealer is a type of malware that has stolen over a billion credentials, posing significant risks such as identity theft and financial fraud. It targets users through specific search terms related to free software, cracked software, game cheats, and activation tools. Cybercriminals use tactics like search engine ads, SEO manipulation, social media promotions, and typosquatting to direct users to malicious sites. Once infected, Infostealer can steal saved passwords, credit card information, cryptocurrency wallet data, and personal information. To mitigate risks, individuals should download software from reputable sources, be cautious of too-good-to-be-true offers, install robust antivirus software, enable ad blockers, verify URLs, use multi-factor authentication, keep software updated, and educate themselves about cybersecurity threats. Additionally, checking for compromised email addresses or passwords at www.haveibeenpwned.com is recommended.