Hackers have access to Internet-connected systems thanks to software that guesses login information such as "root" user name ("username", "admin") . and the most easily accessible password is "123" and " 12345 ".

Research conducted by Associate Professor Michel Cukier of Marryland University (USA) shows that exploits take place continuously and in a very short time because hackers often deploy automated code to find holes in the row. thousand PCs at a time. " The computers we tested were" bombarded "an average of 2,244 times a day ," Cukier said.

Every 39 seconds, the networked computer is attacked once images 1 The survey also lists usernames and passwords or is used by hackers to try to access the system. Behind " root " and " admin " are " test ", " guest ", " info ", " adm ", " mysql ", " administrator ", " user " and " oracle ".

He also found that 43% of the passwords that hackers use to log in often contain very simple characters, such as " password ", " passwd ", " 123 " and " test ".

Cukier also recommends that people should not use names and passwords that are identical or related to each other. After controlling the system, the attacker usually installs the back-end Trojan to set up a ghost computer network (botnet) for easy exploitation later.