Malware is a general name for malicious software that can be used to disrupt computer operation, gather sensitive information or gain access to private computer systems. Malware includes computer viruses, key loggers, trojan horses and worms.
Malware is often packaged with other material such as images or free software and distributed through email attachments or web links. It what is malware in computer particularly dangerous because it can be downloaded unknowingly by anyone using a computer connected to the Internet.
Malware is often used for criminal purposes, but it is also used in denial-of-service attacks against websites or in attempts to access confidential information or systems through phishing attacks.
Although there are many different types of malware, all malware shares one purpose: to make money. Malware distributors use it primarily to steal personal information, bank account information or credit card numbers. Some malware distributors also use their wares to commit identity theft or commit wire fraud by accessing confidential information from an infected computer.