I Think My Computer Has Been Hacked

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I Think My Computer Has Been Hacked – In today’s threat landscape, anti-malware software offers little peace of mind. In fact, anti-malware scanners are terribly inaccurate, especially with exploits less than 24 hours old. Malicious hackers and malware can change their tactics at will. Change a few bytes and a previously recognized malware program becomes unrecognizable. All you have to do is remove all suspected malware files from Google’s VirusTotal, home to over 60 different malware scanners, to discover that detection rates are not all equal.

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I Think My Computer Has Been Hacked

I Think My Computer Has Been Hacked

To combat this, many anti-malware programs monitor program behaviors, often called heuristics, to detect previously undetected malware. Other programs use virtualized environments, system monitoring, network traffic detection, and all of the above to be more accurate. They still fail us regularly. If they fail, you need to know how to detect intrusive malware.

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Note that in any case, the #1 recommendation is to completely restore your system to a known good state before proceeding. In the early days, this meant having to format the computer and restore all programs and data. These days, it might just mean clicking the Restore button. Either way, a compromised computer can never be fully trusted again. Follow the recommended recovery steps listed in each category below if you don’t want a full restore. Again, a full restore is always a better option.

One of the worst messages people can see on their computer is a sudden hijack screen telling them that all their data is encrypted and asking for payment to unlock it. Ransomware is huge! After a slight reduction in activity in 2017, rescue programs are back in full swing. Millions of dollars in productivity are lost and billions of dollars are paid in ransoms. Small businesses, large corporations, hospitals, police stations, and entire cities are being brought to a standstill by ransomware. About 50% of victims pay the ransom, ensuring the money won’t disappear anytime soon.

Unfortunately, according to cybersecurity insurers, who are often involved in the payouts, paying the ransom fails to make the system work about 40% of the time. It turns out that ransomware programs are not without bugs, and unlocking indiscriminately encrypted linked systems is not as simple as putting in the decryption key. Most victims experience days of downtime and additional recovery steps even after paying the ransom.

What to do: First, if you already have a good, recent and tested backup of the affected systems, all you have to do is restore the related systems and fully verify them (officially known as

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) to make sure the restore is 100%. Unfortunately, most businesses don’t have the great backups they think they have. Check your backups! Don’t let ransomware be the first time your important business backups are tested.

Backup copies. Ransomware is becoming increasingly sophisticated. Bad guys using malware spend time in compromised corporate environments trying to do the most damage and that includes encrypting or corrupting your recent online backups. You’re at risk if you don’t have a good, proven backup that’s inaccessible to malicious intruders.

If you belong to a file storage cloud service, it probably has backups of your data. Don’t be too confident. Not all cloud storage services are able to recover from ransomware attacks, and some services do not cover all file types. Consider contacting your cloud-based file service and explain your situation. Sometimes tech support can recover your files, and more yourself.

I Think My Computer Has Been Hacked

Finally, some websites can help you recover your files without paying a ransom. They discovered a shared secret encryption key or some other way to reverse engineer the ransomware. You will need to identify the program and version of the ransomware you are experiencing. An up-to-date anti-malware program can identify the culprit, although often all you have to do is report the ransomware, but that’s usually enough. Search for that name and version and see what you find.

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You receive a pop-up message on your computer or mobile device stating that you have been infected with a virus. The pop-up message pretends to be an antivirus scanning product and claims to find a dozen or more malware on your computer. Although this is not as common as it used to be, fake antivirus warning messages are still a situation that should be handled properly.

They can happen for two reasons: your system has been compromised, or it hasn’t been compromised in addition to the pop-up message. Hope for later. These types of fake antivirus notifications usually figure out how to lock your browser so you can’t get rid of the fake message without killing the browser and restarting it.

What to do: If you’re lucky, you can close the tab and restart the browser and everything will be fine. The fake message does not show the backup. It was lucky. Most of the time, you will be forced to kill the browser. Restarting it sometimes, reloading the original page forced fake ads on you, so you get fake AV ads again. If this happens, restart your browser in incognito or private mode and you will be able to navigate to another page and avoid the fake AV message.

A worse situation is a fake AV message that has infiltrated your computer (usually due to social engineering or unpatched software). If this is the case, turn off the computer. If you need to save something and can do so, do so before turning off. Then restore your system to a previously known clean image. Most operating systems have reset features built specifically for this.

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Note: A related scam is a tech support scam in which an unexpected browser message pops up warning you that your computer has been compromised and calls a toll-free number on your screen for tech support help. Usually, the warning is attributed to Microsoft (even if you’re using an Apple computer). Scammers support this technology instead of asking you to install a program, then giving them full access to your system. They will run a fake antivirus program, which is not surprising to find many viruses. Then they sell you a program to fix all your problems. All you have to do is give them a credit card to start the process. Fortunately, these types of phishing warnings can usually be defeated by restarting your computer or closing your browser program and avoiding the site that hosted it. This type of malware rarely does anything to your computer that requires repair.

If you’ve fallen for one of these tech-enabled scams and given them your credit card, report it to your credit card company immediately and get a new credit card. Reset your PC according to the instructions above if you allowed an impersonated support person to access your computer remotely.

This is a common sign of exploitation: your browser has many new toolbars with names that seem to indicate that the toolbar will help you. Unless you realize that the toolbar comes from a well-known vendor, it’s time to get rid of the fake toolbar.

I Think My Computer Has Been Hacked

What to do: Most browsers allow you to review installed and active toolbars. Remove any software you don’t want to install. When in doubt, remove it. If the fake toolbar doesn’t appear there or you can’t easily remove it, see if your browser has an option to reset it to its default settings. If that doesn’t work, follow the instructions above for fake antivirus notifications.

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You can usually avoid malicious toolbars by making sure all your software is fully reviewed and by paying attention to the freeware that installs these toolbars. Tip: Read the license agreement. Toolbar settings are often stated in license agreements, which most people don’t read.

Many hackers make a living by redirecting your browser to a place you don’t want to go. Hackers get paid by making your clicks appear on someone else’s website. They often don’t know that the clicks on their website are from malicious redirects.

You can usually detect this type of malware by typing some very common and related words (eg “puppy” or “goldfish”) into Internet search engines and checking if the same sites appear in the results; there is almost always no match. to its terms. Unfortunately, many redirected searches on the Internet today are hidden from users by using additional proxies, so false results are never returned to alert users.

Generally, if you have fake toolbar programs, you are also being redirected. Technical users who really want confirmation can detect their own browser or network traffic. Traffic sent and returned will always be distinctly different on a compromised computer than on an uncompromised computer.

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What to do: Follow the same instructions as for removing fake programs and toolbars. Usually, this is enough to remove

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