Below you can see a full list of articles listed in our Security category (Page 1):

Data Recovery
Data Recovery - Recovering your data files after some kind of data disaster has occurred
Data recovery is the process of recovering your data files after some kind of data disaster has occurred. The most common situation that requires data recovery is due to critical hard drive failure. There are also plenty of cases when viruses and trojans may attack your computer and render it unusable or causing significant loss of data through altering or deleting files, partition tables, or wiping out the entire hard drive in a few cases. There can be accidental file deletion by computer user ...
Remotely identify operating system running
Remotely identify operating system running - Security Information : Information leakage through remote operating system identification
Before attempting to break into your computer and take control over it, an attacker will first of all attempt to remotely identify the operating system your computer is running. The reason is simple – the ways to compromise your computer and take control over it depend directly on the operating system your computer is running. The attacker has various ways in doing this type of detection. Usually, operating system detection is performed during the initial phase of an attack; during ...
Windows network risks - NetBIOS, SMB and null sessions
Windows network risks - NetBIOS, SMB and null sessions
Some of the biggest security risks through information leakage, affecting Windows computers is the Windows network itself, and the protocols used to share files and printers amongst local computers in a local Windows network, particularly SMB and NetBIOS, taking advantage of default hidden shares. Here we describe a discovery technique also known as null sessions, that can provide additional in-depth information about a remote computer, that can further be used to compromise it and take control ...
Screensaver trojans
Beware of screensaver trojans - this is a common technique used by many adware/spyware/trojans, to trick people into downloading such programs and ending up in getting their computer infected
Screensaver trojans Beware of screensaver trojans - this is a common technique used by many adware/spyware/trojans, to trick people into downloading such programs and ending up in getting their computer infected. Such malitious programs are often been distributed on various shady websites, disguised into free versions of screensavers, emoticons and other similar fake utilities. The unsuspecting user downloads such a program and installs into his/her computer. Upon ...
Denial of Service Attacks
Basic information about Denial of Service Attacks and Distributed Denial of Service Attacks
Denial of Service Attacks are a type of attacks coming from the Internet, aiming at attacking remote computers or servers in such fashion that the remote computer cease to function or is severely affected up to the point where it can no longer function normally. Basically, any computer or server connected to the Internet can be affected by denial of service attacks. More recently, denial of service attacks, also known as DoS attacks, have evolved into a new and more dangerous type of ...
Smurf Attack
Smurf Attack - Denial of Service
Let's talk a bit about what a Smurf Attack is, and how it can be used to attack remote computers and networks and render them not functional. The Smurf Attack is an ICMP - based Denial of Service Attack. In this scheme, there are two parties affected, the vulnerable remote network used to launch the attack and its computers, and also the target -victim- computer that is severely affected by the attack. In a smurf attack scheme, the exploit software (known as "smurf") will perform the ...
Wireless Security
Wireless Security - tips for improving network security in wireless networks
Wireless technology is quicly spreading around the world, and lots of wireless devices are used in home or office environments. One of the main problems with wireless connections is security, and here we will attempt to show an overview of the issues regarding wireless security. Wireless security is doable but difficult to enforce. First of all, anyone with a wireless network card, located within the range of a wireless network, can connect to your wireless network and at least ...
ICMP and Ping
ICMP and Ping -The Internet Control Message Protocol, and the Ping utility
What is ICMP, and what does Ping mean? And what are the implications for computer security? Here is a bit of information on ICMP and Ping. ICMP stands for Internet Control Message Protocol, one of the most important protocols part of the Internet protocol suite. The purpose of ICMP is to send ICMP requests and receive good condition messages and error messages. Basically, ICMP packets are being sent to a remote computer or router, and the computer may respond with another ICMP ...
Keyloggers
Keyloggers and Security
Keyloggers can be a real problem for your computer. A keylogger, also known as keystroke recorder, is a piece of stealth software installed on your computer, in order to spy on you. It does its spying through silently recording your keystrokes in a file. Due to this type of monitoring, all your emails, documents, usernames and passwords entered, even your own credit card number etc., are being recorded and can be disclosed to other people - the ones that installed the keylogger on your computer ...
Tips for improving computer security under Windows XP, Part 2
Tips for improving computer security under Windows XP, Part 2 - How to strenghten computer security under Windows XP
4. Use proper antivirus software. There are thousands of new strains of viruses and computer worms released each year. The best thing you can do to prevent infection from these deadly strains, is to use proper antivirus software. There are a lot of good antivirus software manufacturers that you can choose from, like Symantec, McAfee, Kaspersky Labs, etc. - just to mention a few; it is recommended to download trial versions of such antivirus software, and try them in order to choose what fits ...
Disable Hidden File Extensions
Disable Hidden File Extensions - do not hide file extensions for known file types - security options
One of the security options change you should perform to your Windows operating system is to disable hidden file extensions. By default, most Windows installations are configured to hide file extensions for known file types. This is not good, because the user is not informed as to what kind of file he/she is about to execute, apart from the icon associated with the file which does not tell much about any problems that may be with the file. An attacker can choose to send the user an ...
Email Attachments and Risks
Email Attachments and Risks - dangerous email attachments and what to do to protect your computer from email-based risks
One of the most common tools we are using on a daily basis, is email. Due to this fact, email is also a major security problem, due to the fact that a lot of worms and trojans are using email to get into our computers. The main problem with emails comes from using email attachments. While email attachments represent a useful addition to email functionality, as a way to send files via email, they are also risky due to the fact that email attachments can contain not just documents, but ...