Averting Intruders and Malicious Employees
FTP is a prime target for intruders as well as malicious employees and contractors. Tools and techniques used to gain access to FTP servers are widely shared even amongst amateur hackers. Tens of thousands of hackers have taken the time to create and upload instructional videos on how to attack FTP and post them on polular sites like YouTube. That these videos amass hundreds of thousands of views shows how popular FTP attacks are.
Some of the main reasons are: