Once the cracker cleans up the appropriate files to hide his tracks, he will want to leave a backdoor in order to avoid using his noisy exploit again.

一旦黑客清理相应的文件来隐藏他的曲目，他希望留下一个后门，以避免再次使用他的嘈杂利用。

youdao

Yes, we welcome our new Search Engine overlords and all that, so long as they've got our best interests at heart, but there's a certain irony in Google removing a backdoor exploit by using a backdoor of its own -- even one that (in this case) will email you to report what it's done.

ENGADGET: Google flips Android kill switch, destroys a batch of malicious apps (update)

Discovered and submitted to the agency this past Monday, the exploit unearthed by Smith takes advantage of an "SNMP backdoor" : an internet protocol that allows for remote network administrative control without authentication.

ENGADGET: Samsung printer hack could let the wrong ones in (updated)