A backdoor is a method of bypassing normal authentication, securing illegal remote access to a computer while attempting to remain undetected.

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4
votes
2answers
267 views

How can I find the malicious/backdoor codes without knowing the last modified date?

Last night my website got hacked and attacker edited the main index.php. I was wondering even he edited that file, the last modified date did not change. so I just worry if he would put the backdoor ...
-6
votes
1answer
96 views

Hacker problems - They stole my backups [closed]

I am facing an issue where hackers are seeking to compromise two of my servers. They succeeded in wiping out both and stealing my backups. I had off-site backups and I am back online. Nonetheless, I ...
2
votes
4answers
359 views

How can I detect backdoors?

I have a machine running Mac OS X and I suspect there may be a backdoor installed. I know that I could take it to a professional security firm for analysis, or nuke it from orbit, but I'm interested ...
1
vote
2answers
126 views

how to find injected code in SQL

Recently one of my sites is hacked. The hacker used SQL injection to compromise the security. After getting SQL access he injected code in many places in database. I cleaned up many of them. But I am ...
1
vote
5answers
311 views

Site backdoor & eval()

I'm running a Joomla 1.7 site which was hacked today. Below script did the hack. ...
69
votes
7answers
3k views

How do I know a piece of software only does what the author claims?

Without being a programmer or a computer expert, how can I know if a particular program or any piece of software in general doesn't have hidden unwanted functions compromising privacy and security?
3
votes
2answers
479 views

I found what, I believe, is a backdoor in my home router, what should I do?

My country doesn't have any laws regarding this subject (Brazil). And I don't want to disclose it to the police, it's more likely they will just keep it to themselves. What should I do?
0
votes
2answers
170 views

can a backdoor executable be used on an occupied port?

Suppose I am doing a penetration test on a network that has a firewall that blocks all ports except 80, 110, and 443. I want to use a metasploit reverse-TCP backdoor executable written in msfpayload ...
0
votes
0answers
73 views

Backdoor virus removal [closed]

I have big problem. My sons friend came the other day and supposedly downloaded a game from IGN site Area51, it asked him to remove back door? using norton internet security. He did this computer ...
4
votes
6answers
377 views

Could a computer program be used to automate testing for trapdoors?

Could a computer program given the source or object version of another program be used to automate testing for trapdoors/backdoors?
3
votes
1answer
134 views

Backdoor.ASP.Ace.C keeps showing up and being removed by f-secure

Backdoor.ASP.Ace.C is being found and removed from: C:\Users[username]\AppData\Local\Temp[randomstring] We have recently found some malicious aspx files on our IIS server that we have studied and ...
2
votes
3answers
499 views

Disable Perl for some/most Linux users?

One of my server's web accounts got hacked a couple of times. Each time someone downloaded a Perl script via some phpBB forum and used the Perl script to do whatever they wanted to do (mostly connect ...
2
votes
2answers
238 views

How do hard-wired backdoors work?

How can a vulnerability be hardwired? Just read this article, which got me thinking. Is there simply vulnerable software running on a piece of hardware that is read/write only or..?
203
votes
22answers
287k views

I found that the company I work for is putting a backdoor into mobile phones

I have found out recently that the remote assistant software that we put in a smartphone we sell can be activated by us without user approval. We are not using this option, and it is probably there ...