Some antivirus software blocks known malicious websites that attempt to install malware. This product safeguards against viruses, spyware, malware, and other online attacks. Antivirus software often uses heuristic rules for detecting viruses and other forms of malware. This includes protection against malware, ransomware, exploit, and malicious websites. Phishing emails may contain links to other websites that are affected by malware. The types of attacks include viruses and malware issues. Law enforcement has often pursued the authors of other malware, particularly viruses. Downloads are also checked to see if they are known to be malware infected. It specializes in protecting home computers, smartphones, and companies from malware and other threats. Once hired, Poseidon would install additional malware and backdoors. ESET also detected a malware called Win32/Hoax. Governments have also been accused of adding such malware to software themselves. YARA is the name of a tool primarily used in malware research and detection. However, false positive rates are inherently higher than those of traditional malware detection. One of these pitfalls includes decreased resilience to malware infections.