Hacking is the violation of server or network security via exploitation of weaknesses in that security.

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32 views

Protect server from uploads

I have NGINX let's say with root /home/leonel/www In the www folder i have the upload.php and dl.php file User uploads to upload.php and upload.php moves the uploaded file to a subfolder of the ...
3
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1answer
422 views

got weird email with server data. Does this mean I got hacked? [duplicate]

I just got the following "undelivered message" to my postmaster@mydomain.com Does this mean someone might have tried to (or succeeded in) hacking me? (I replaced certain parts in the below for ...
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1answer
37 views

Diagnosing heavy bandwidth usage

I run a couple of IIS web servers, one on win server 2008 R2, the other on 2003. Both fully patched and up to date, with AV. Running on a No NAT connection with 8 WAN IP's The 2003 machine seems to ...
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0answers
32 views

Hacked VPS Centos 6 32bit [duplicate]

Im getting high CPU load from processes I havent started. root 4356 0.0 0.1 6372 1712 pts/0 Ss 18:22 0:00 -bash root 5992 64.8 0.2 108784 3044 ? Ssl 18:29 2:41 su ...
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0answers
39 views

Server Shellshocked, how to find out how? [duplicate]

I have access to one server that is shellshocked and there is injected crontab along with altered ssh init script. Here is gist of file that does all the work Question is how to investigate how ...
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1answer
91 views

How do I know how the hacker gained access to my machine? [duplicate]

I own a dedicated machine and today I got an email from my host saying that my server will be blocked if I don't stop abusing the network. I am not a spammer or hacker. Someone was using my machine to ...
0
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2answers
72 views

Server compromised, how deep is the intrusion when PHP files are changed in folder without write permissions [duplicate]

I know there have been a lot of similar questions, but none of them covered this specific question: I found on almost all PHP files on a clients server script injections, it was actually the script ...
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2answers
95 views

Arp attack on my network

We have a small network of around 100 laptop/desktops and around 20 servers (sounds an overkill but these servers provide service for all our external contractors too) and we have recently noticed ...
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2answers
70 views

server hacked - cron continue to run [duplicate]

Someone accessed my EC2 Ubuntu 14.04 and installed some malicious cron to do port scanning with user eric. I removed user eric and the file executed, but in syslog I see Sep 19 15:27:01 ip-xxx ...
0
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1answer
139 views

I think my server was hacked - how do i know what has been changed? [duplicate]

I have read the following posts which didn't answered my questions: - My linux server was hacked. How do I find out how and when it was done? - How do I know if my Linux server has been hacked? - and ...
0
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1answer
19 views

Is it possible to mimic the client of a https web service

There is such a windows application that communications with the server through https protocol, it is an auction tool and works only several hours per month. I have captured network packets (by ...
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2answers
103 views

Constantly getting hacked (server 2008 R2) [closed]

A quick summary on the events from the last 2 weeks: We noticed that our SQL Server was becoming unreliably slow. This is a critical machine that's used by one of our local supercomputing groups to ...
0
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0answers
59 views

Auto black list hackers from Apache server that hit website too fast

I notice some hackers jumping from website to website iterating all possible IP addresses and hitting them so fast and hard with their attack URLs to get some flaws. I am more interested in how to ...
2
votes
1answer
382 views

Someone tried to hack my Node.js server, need to understand a GET request in the logs

Alright, so I left my Node.js server alone for a while and came back to find some really interesting stuff in the logs. Apparently some moron from China or Poland tried to hack my server using ...
0
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1answer
58 views

IIS 7.5 website application pool with 'full control' permissions hackable?

Although I would never set this permission, I would like to know how a static html website with the permission mentioned in the title could be compromised. In my humble opinion, I would guess that ...
0
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1answer
64 views

Taking database from possibly cracked server

I have a server which is behaving erratically. While I investigate if it's been hacked, I'm also thinking about my backup options: As many posts have said the only way to truly know you're clean is ...
0
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1answer
98 views

Attacks to my server? [closed]

I've a VPS running a website. I've a logwatch set in the server, and I've received several alerts like: A total of 2 sites probed the server 31.4.180.163 88.1.154.211 Requests ...
2
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1answer
99 views

Getting old website after hack (even using wget) - No proxies involved

Our server was hacked and several pages were replaced. We manage to clean up everything. Currently if you access the website from anywhere using any browser the website shows correct and clean. Only ...
2
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3answers
263 views

Blocking IP addresses of obvious hack attempts [duplicate]

I have a simple Apache webserver setup and basic IP tables (ufw) for a development server. In my logs I see lines like this: [Fri May 16 10:10:36.258369 2014] [:error] [pid 15926] [client ...
1
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1answer
452 views

Can I clean these two hacked servers withour reinstalling? [duplicate]

I've got two dedicated servers that some days ago started to send me notifications about unknown cron jobs running. On both servers I've got secondary accounts for my websites and the hacker has ...
1
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0answers
64 views

suspicious connection on server

OS: Windows Server 2003 Monitoring tool: CurrPorts When monitoring traffic on the server for traffic going out on port 80, example of results: 5/1/2014 2:36:23 PM Added cscript.exe TCP ...
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3answers
3k views

Block range of IP Addresses

I am getting bombarded with attempted hacks from China all with similar IPs. How would I block the IP range with something like 116.10.191.* etc. I am running Ubuntu Server 13.10. The current line ...
1
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1answer
87 views

Someone tried to access a list of hundreds of standard website urls in a go, is it a cause of concern [duplicate]

I was just checking my website logs today and found that someone accessed my website for a list of hundreds of standard urls that almost every 3rd or 4th website developed on a standard platform ...
0
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1answer
41 views

Two different SSID's on the same chanel. Is it safe?

If I have multiple network, that have their SSID's on the same channel, can I go into monitor mode(of the wifi interface) and capture packets of the other SSID?
2
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2answers
79 views

EC2 hosting, trying to understand network security model

We are hosting few virtual machines at amazon. Security groups and other configurations are set up to allow access only from desired addresses and to desired parties. The machines do talk with each ...
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0answers
89 views

How to secure tmp directory from hard link attacks when host doesn't allow partitioning

I'm a new sysadmin in the making, have learned that I need to have /tmp and /home directories on separate partitions in order to prevent possibilities of privilege escalation through hard links based ...
2
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0answers
92 views

What kind of hacking attempt is this? [closed]

This past week, my traffic logs are showing many hits (usually with repeated tries) for a url from perhaps 30+ different ip addresses all over the world. This is not a url that should garner more than ...
0
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1answer
89 views

Securing the Django web site which is run with Apache mod_wsgi

I have made a website in Django 1.6 with PostgreSQL database which is hosted on Ubuntu 12.04.3 with Apache 2.2.22 and I have recently noticed lots of hacking (probing) attempts from various IPs ...
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3answers
347 views

Is this a security breach?

I have a server running Ubuntu 10.04LTS (I know it is too old), which over the last couple of weeks has on occasion been unresponsive to network traffic, and needed a hard reset first thing in the ...
1
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4answers
297 views

Random IP's constantly trying to connect to SQL Server

We are building a cloud-based application that relies on a login database as well as many individual client databases. Using rackspace we have setup a server (windows server 2012) with SQL Management ...
0
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1answer
755 views

Do cPHulk Brute Force Protection Settings Effect Hosts?

Question: Do my settings (shown below) prevent visitors from getting to any of the public web sites on my server if their ISP's IP Address has been blocked/black-listed through cPHulk Brute Force ...
26
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7answers
4k views

How can I block hacking attempts targeting phpMyAdmin?

My website gets thousands of hits daily from different IPs trying to access: /php-myadmin/ /myadmin/ /mysql/ ...and thousands of other variations. None of these directories exist, I don't even have ...
4
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3answers
836 views

VPS exploited for Bitcoin Mining. How to identify the flaw?

An ubuntu VPS I run to host a few basic websites seems to have had apache hacked for bitcoin mining. In my apache error.log I see the following. [Sun Dec 15 06:27:58 2013] [notice] Apache/2.2.22 ...
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1answer
49 views

“GET /assets/)!==t&&(e.html(e.data( HTTP/1.1” 200 3538 “-” “Java/1.7.0_25”

I'm seeing GET requests like: "GET /assets/)!==t&&(e.html(e.data( HTTP/1.1" 200 3538 "-" "Java/1.7.0_25" in my logs for a box hosting a Rails app. Looks suspiciously like someone probing ...
0
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2answers
65 views

login page permission has changed suspiciously [duplicate]

I have developed a website with php and apache server on linux centos I am not professional on security issues and I think some folks try to hack my website first please advice me which security ...
1
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3answers
199 views

Check IP who is visiting my site on nginx

I don't really want to know about this since I would like to keep it really private and give my visitor their privacy as much as possible (Not that my blog is popular though). I just installed Ubuntu ...
0
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0answers
324 views

LogonUI.exe process run again and again - is someone trying to hack us?

One of our win server 2008 virtual machines is constantly at 30% cpu. Looking at the task manager I notice that LogonUI.exe appears again and again, each time with a different process id (PID). It ...
0
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0answers
20 views

Fedora Core 9 Being Hacked? [duplicate]

I think I have a system compromise, with sudden perl process starting at the background with the same user as apache (daemon). I found today ZMUIE, which was script to do some sort of bruteforce ...
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1answer
202 views

My URL has been identified as a phishing site [duplicate]

Some months before ordered VPS at Ramnode According to tutorial (ZPanelCP on CentOS 6.4) http://www.zvps.co.uk/zpanelcp/centos-6 Installed CentOS and ZPanel) Today received email We are requesting ...
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1answer
149 views

Hacked website, code is encrypted in hex, unable to identify [duplicate]

my web site hacked and i am getting code in index page, but i am unable to find that where is the code in my web site... ...
0
votes
1answer
126 views

How to detect malicious script in my CentOS server? [duplicate]

I am warned from my VPS provider that my server sends a lot of SSH SYN Attack to other servers, but I have no idea how to deal with it. Here's the detail my provider sent me: Where can I find the ...
2
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1answer
220 views

Prevent user access to console but still allow svn+ssh:// access to SVN repos

I create an user john on my server and I add him into the SVN group so we can share our code and everything looks okay. Now I want to prevent this user from connecting to the console or shell via SSH. ...
0
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0answers
86 views

Automatic IPSec IP Blacklist

A new client of ours has a legacy web app on Win Server 2008 R2 and when we started diagnosing the event logs, there were multiple ip's in China trying to hit both their sa sql account and trying to ...
0
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2answers
69 views

How can i make my all webistes only accessible by browsers and not auto scripts

I have that my websites have been hacked by some auto running libwww-perl BOT/0.1 (BOT for JCE) and Gecko/20100101 Is there any way that my all websites are only avaiable to genuine browsers and not ...
1
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1answer
2k views

What does this Apache access_log entry mean?

68.96.87.214 - - [07/Aug/2013:21:29:25 +0000] "GET /HNAP1/ HTTP/1.1" 403 501 "*************" "Mozilla/4.0 (compatible; Opera/3.0; Windows 4.10) 3.51 [en]" 177.47.105.41 - - [07/Aug/2013:21:57:26 ...
0
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1answer
117 views

SSH to track hacker [duplicate]

I'm very new to using SSH and my server has been hacked, someone has gone onto a website of mine and made modifications. I have the time which they did it (29/07/2013 18:14:30), but cannot see how ...
0
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2answers
61 views

Looking for a shell command to read non-binary part of most common image types

A website I'm hosting on my dedicated server has been hacked. Some pictures have been infected with things like <?php eval(base64_decode(....));?>. I'm looking for a generic shell command which ...
0
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1answer
525 views

How to detect my server is used as a port scanner? [duplicate]

My Web Server is running Ubuntu 12.04.2 LTS with all security updates installed. It is used as a Web Proxy server that handles incoming requests on HTTP/80 HTTPS/443 but also retrieves web content ...
1
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2answers
57 views

Remote code integrity checking prior to execution

I'm contemplating putting a site online that could be an attractive target for hackers or employees of the host, who could alter the site's code to their benefit. Not wishing to self-host, I was ...
0
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2answers
96 views

Should I be concerned with seeing this in my logs?

The following requests (this is about half of them) in my Nginx access log have all come over the span of a few minutes from an IP that is registered to an ISP in Vietnam (I could provide the IP, but ...