Showing posts with label Virus Troubleshoot. Show all posts
Showing posts with label Virus Troubleshoot. Show all posts

Sunday, April 26, 2020

Mac malware is as real exist

Macs don’t get viruses ??. That’s a common myth in the world of Mac users. And while it may be unpleasant to burst that bubble, it’s essential for people to understand Macs are not immune to malware and other types of data attacks. The last few years have not only brought a dramatic increase in the number of threats but also in the variety of them. For instance, from the fourth quarter of 2018 to the first quarter of 2019, Mac malware has soared by more than 60%, according to AppleInsider.

Apple’s built-in security measures are obsolete

The days when Macs’ built-in security was enough to keep malware away are long gone.
The problem with macOS’s built-in defenses is that it can only catch malware that Apple has seen before. Whenever there’s a new threat, it takes several days for Apple to update its defenses—if Apple ever does—leaving Mac users completely unprotected while the malware is in the wild.
That means your Mac has zero protection against the newest forms of malware.

Wednesday, December 2, 2009

How to Protect Your Mobile Phone from Viruses?

As mobile phones evolve so too do the malicious software, situations, and perpetrators of such that they can fall prey to. It is imperative that all users of mobile phones remember that other people can and will use your cell phone to invade your privacy and personal space without ever even dialing your mobile phone number.

Because mobile phones have the marvelous talent for keeping a record of all calls made and received, they have become an obvious target for unscrupulous activity. Back in 2006, a number of reports appeared on the internet regarding a company that was marketing a piece of software capable of embedding itself in a mobile phone and remotely transmitting this "call log" to someone else's server.

Sunday, November 15, 2009

How to remove Conficker and prevent re-infection

Symptoms of Conficker infection include the following:
- Access to security-related sites is blocked
- Users are locked out of the directory
- Traffic is sent through port 445 on non-Directory Service (DS) servers
- Access to admininistrator shared drives is denied
- Autorun.inf files are placed in the recycled directory, or trash bin

The following steps to remove W32/Conficker.worm and prevent it from spreading:

Tuesday, November 10, 2009

How to identify and Avoid the USB drive affected with virus

Virus and worms are easily spread by carrying it on a removable medium such as ,USB drive , I-Pod, CD, Floppy. USB drive is otherwise called as “Flash Drive”,”Thumb Drive” ,”Memory stick” ,”External USB Hard Disk”. Even though we have very good Antivirus , New Viruses are one step Ahead than Antivirus. We cannot restrict USB Drive , but we can avoid spreading of virus and worms through USB Drive. So we have to be little bit careful while working with USB Drive, some precautionary steps are follows.

How to identify the USB drive affected with virus

After Inserted USB drive

This screen shot shows the USB drive which is affected with virus

Exploits Facebook - The Facebook fan check Virus

The Facebook fan check Virus has been running absolutely rampant today. Analysts estimate 237,000 accounts have already been compromised by the Facebook fan check Virus and over a million will be compromised by the Facebook fan check Virus in the next 48 hours.

The Facebook fan check Virus is a new virus that exploits Facebook's ability to add
applications. It steals the user's login data and locks them out of their account.
Then Facebook fan check Virus sends messages to every friend on the compromised account and attempts to infect them with the Facebook fan check Virus. The friends then open the message an automatically become infected.

Wednesday, November 4, 2009

Malware attacks via Facebook

Facebook admitted that up to 1800 users had had their profiles defaced by an attack that secretly installed a Trojan while displaying an animated graphic of a court jester blowing a raspberry.

Facebook members are also receiving messages from friends hacked accounts via the social network, linking to third-party websites designed to infect the recipient’s
computer. Hackers have found value in compromising Facebook accounts, stealing usernames and passwords, and then using the profiles as a launching pad for massdistributing malware attacks and spam.

Adware, Spyware and Computer Virus

Adware, spyware and computer virus share some similarities, one of which is that all three aremajor nuisances for computer users. Let's differentiate the three.

Spyware is software that does not intentionally harm your computer. What they do is that they create pathways wherein someone else aside from the computer owner can communicate with the computer. Normally spywares record the various types of web sites you visit which are later used by web advertisers to allow them to send you unwanted emails and pop-ups.

Tips How to Virus Recovery

Why is a computer virus harmful? For the same basic reason that biological viruses are: they damage components that keep systems healthy. Some are relatively benign - they generate annoying, juvenile messages or crash the system once, then go away. But many are specifically designed to do substantial harm - by deleting files needed to run word processing programs or perform essential operating system tasks. Some prepare the way for further attacks by opening up access to administrative functions.

Combating them is simple - install antivirus software, keep it up-to-date and running in the background and don't open email attachments from unknown sources. Nonetheless, odds are high that someday the system will be infected. Important data will be lost, essential program and operating system files will be zapped. Now what?
First thing: Don't panic. You may not even be infected. Before implementing a cure you have to diagnose properly.

Tuesday, November 3, 2009

When and how to launch an attack Trojan Horses and Bots

In the often repeated story of the Trojan horse used to get inside and attack the fortifi ed and well-defended city of Troy from within, invaders used something that was seemingly benign as a vehicle for the attack: a large wooden horse. Similarly, Trojan horses of the information security world are seemingly benign programs that attack computer systems from within.

Once inside the computer, a Trojan program commonly replaces key system fi les and/or programs with malicious versions of the same. When these programs are executed,
they perform their predetermined destructive activities, and users are powerless to stop them. For example, an attacker may replace one of the Windows operating system dynamically linked libraries (DLLs) with a malicious version. DLLs are program fi les that Windows calls on to perform various tasks. An attacker may replace one of these DLLs with a Trojan horse version that does everything the normal DLL did, and a little more. That little more may be any number of things, from reformatting the
hard drive to stealing credit card numbers.

Tuesday, October 27, 2009

Ten Commandments for Your Computer Sanity

1. Dont assume anything. Make some time to learn about securing your system.

2. Acquire and use a reliable antivirus program. Select an antivirus that has a consistent track record. Checkmark, AV-Test.org and TuV are among the most respected independent testers of antivirus software.

3. Acquire and use a reliable firewall solution. Again, independent reviewers are your best bet for reasonable choices. Some operating systems come with a firewall which only filters incoming traffic. Use a firewall that can control both incoming and outgoing Internet traffic.

4. Do not open e-mails coming from unknown or distrusted sources. Many viruses spread via e-mail messages so please ask for a confirmation from the sender if you are in any doubt.

Sunday, October 25, 2009

Why Are Websites Being Targeted for Malware Attacks?

The simple answer is that malware attacks on websites are the best way for hackers to distribute viruses. In the past, viruses used to spread via email attachments, or by coaxing users to download and install a malicious file. These have all become less effective and/or too cumbersome for the hackers over time. The preferred
method of distributing viruses these days is by drive-by-downloads from legitimate websites. A drive-by-download occurs when a user visits a web page and malicious
code is automatically and silently downloaded and installed on the user's computer, without any interaction with the user required.

Once the virus is on the user's PC, the hackers have remote access to the computer and can steal sensitive information such as banking passwords, send out spam or install more malicious executables over time.

Firewall - Do I need a firewall, and if so, what kind?

The very short, very easy answer is: hell yes! With all that's happening on the internet these days it's simply too risky to sit "naked" on the internet unless you really know what you're doing. The real question is: what do you need? It's even possible you already are behind a firewall and don't need anything additional.

First, realize that a firewall is about protecting you from them, where "them" means "the malicious folk on the internet". A correctly configured firewall does not block your access out to the internet so you should be able to browse the web, for example, without interruption. The firewall prevents access from somewhere on the internet to you. That's not to say people can't send you email; they can because you access your mail through the internet when you retrieve or download it. It does mean that people can't copy files directly to your PC or cause programs to be run on your machine.

Firewall - What's a firewall, and how do I set one up?

A firewall is a piece of software or hardware that sits between your computer and the internet and only allows certain types of things to cross the wall. For example, a firewall may allow checking email and browsing the web, but disallow things that are commonly not as useful such as RPC or "Remote Procedure Calls". In fact, it's vulnerabilities in RPC that allowed for one of the more recent worms to propagate.

Viruses like the Sasser worm can be prevented simply by using a good firewall. What's a firewall? Well, in your car it's the "wall" of metal behind the dashboard between you and the engine that prevents engine fires from roasting you and your passengers.

Saturday, October 24, 2009

HOW TO AVOID VIRUS INFECTION?

In this article we will explain every tip you can use to avoid virus and other
malicious software (malware) infection such as worms, trojan, adware, and spyware.
As you already know of what damages they can inflict to your system in our early
‘Malicious Software’ coverage, you must be irritated by now. In a time when data
exchange traffic is very high and there is almost no spot where a PC is not exposed
to the World Wide Web, it is no wonder that to be completely freed by any virus
attack someone can advise you to completely disconnect your line to the outside
world.

Friday, October 23, 2009

Web-based Malware Hurts Businesses

What is Web-based Malware?

Web-based Malware is an emerging security threat for websites and web users. Hackers are now planting malicious code on legitimate websites in an effort to distribute viruses to consumers. (This attack is often called a “drive-bydownload”). Once the viruses are installed on users’ PCs, the hackers can monetize those compromised PCs in various ways (including logging users’ keystrokes or using the compromised PCs to send spam email).

The malicious code that hackers inject on websites is Web-based Malware, and it is very different from the typical virus that might infect a user’s PC. Web-based Malware runs in a web browser and often works by embedding in, sourcing in, or redirecting to malicious content from a hacker's website. Web-based Malware can be written in HTML, Javascript, Dynamic HTML, AJAX, Flash, PDF, or a variety of other programming languages. By contrast, a PC-based virus often takes the form of an executable file that runs code directly on the computer's microprocessor as opposed to being interpreted by the web browser. Attackers often use Web-based Malware to infect web pages so that those web pages can serve as distribution points for traditional, PC-based viruses.


Types of Malicious Code

Malicious code can be defined as code that has been developed to perform various harmful activities on a normal computer. Examples of such harmful activity can be actions such as stealing the end users data or personal information, infecting other ma-chines on a network or sending spam through infected machines. There are several categories of malicious code which include but are not limited to viruses, worms, trojan horses and bots. Each of these categories has differing characteristics according to their intended purpose. As we move forward, our aim is to discuss the various techniques we can use for effectively analyzing such malicious code.

Let us discuss the basic definitions of some different types of malicious code:

Combating Spyware

Spyware can be more than an annoyance. Poorly programmed spyware can interfere with other programs and can even cause system instability. Privacy issues are at stake as well.This type of software is often installed without a user's consent and often can't be uninstalled without special tools. When distributors use tricks and deception to installuninvited software, trust is destroyed.

The first line of defense against spyware is to be careful installing software. Know what's being downloaded. A large percentage of freeware or shareware programs have spyware embedded in them. Sometimes that's disclosed in the user agreement, but often not. Before downloading any new software, look for guarantees that it's spyware free. Even so, be on your guard — the file-sharing program Kazaa has been claiming to be spywarefree for years. Anyone who installs this software soon has an opportunity to test this claim.