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Tutorials

Useful tutorials on various PC troubleshooting topics. Video tutorials.

How to fix KMODE_EXCEPTION_NOT_HANDLED BSoD error in Windows 11/10

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KMODE_EXCEPTION_NOT_HANDLED is a Blue Screen of Death (BSoD) error that occurs on Windows 11 and Windows 10 systems, indicating that a kernel-mode program has generated an exception which the error handler did not catch. Essentially, this error points to serious issues at the system's core level, often caused by faulty drivers, incompatible hardware, or software conflicts. When Windows encounters this error, it halts the system to prevent further damage, displaying the BSoD with the stop code "KMODE_EXCEPTION_NOT_HANDLED". Users may experience sudden system crashes, restarts, or freezes without warning, disrupting workflow and potentially causing data loss. This error can be particularly frustrating because it may not always specify the exact driver or file causing the problem, making troubleshooting challenging. Common triggers include recently installed hardware, outdated or corrupted drivers, malware infections, and memory problems. Understanding the root causes is essential for resolving the issue effectively. Ignoring this error can lead to persistent system instability and decreased performance. Therefore, addressing the KMODE_EXCEPTION_NOT_HANDLED error promptly is crucial to restore system reliability and prevent future crashes.

How to fix KERNEL_SECURITY_CHECK_FAILURE BSoD error in Windows 11/10

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KERNEL_SECURITY_CHECK_FAILURE is a critical Blue Screen of Death (BSoD) error that occurs on Windows 11 and Windows 10 systems when the operating system detects corruption or invalid entries in vital data structures. This error indicates significant issues at the kernel level, often related to incompatible drivers, memory problems, or corrupted system files. When this error surfaces, it forces the system to crash to prevent further damage, displaying a stop code that aids in diagnosing the underlying issue. Users might encounter this error during system boot-up, while running specific applications, or after installing new hardware or software. Common triggers include faulty RAM, hard drive corruption, or conflicts between system processes and third-party programs. Additionally, malware infections targeting system files can modify essential components, leading to this error. Understanding the root causes is crucial for effectively troubleshooting and resolving the problem. Ignoring this error can result in persistent system instability and potential data loss. Therefore, addressing the KERNEL_SECURITY_CHECK_FAILURE promptly is essential to maintain the smooth operation and reliability of your Windows system.
You Share The Same Name e-mail spam

How to stop “You Share The Same Name” e-mail spam

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You Share The Same Name email spam is a deceptive phishing scheme that claims the recipient shares a name with a deceased gold merchant from Singapore who supposedly left behind a fortune of $30 million without any next of kin. The email typically solicits personal information or monetary contributions under the pretense of facilitating the release of these funds, preying on the victim's greed and curiosity. Spam campaigns like this often spread malware through malicious attachments or deceptive links that redirect users to fraudulent websites designed to harvest sensitive data. When users open these attachments or interact with these links, malware can infiltrate their systems, leading to unauthorized access and identity theft. Cybercriminals usually employ social engineering tactics to make these emails appear legitimate, often incorporating logos from reputable companies and creating a false sense of urgency. It’s crucial for users to remain vigilant and recognize the signs of such scams to protect their personal information and devices. Ultimately, awareness and caution can significantly reduce the risk of falling victim to these scams and the malware they often carry.
A Businessman Made A Fixed Deposit Of Huge Fund e-mail spam

How to stop “A Businessman Made A Fixed Deposit Of Huge Fund” e-mail spam

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Receiving an email that says A Businessman Made A Fixed Deposit Of Huge Fund indicates a phishing scam designed to trick recipients into divulging personal information or sending money under false pretenses. Cybercriminals behind such spam campaigns often disguise themselves as bank officials or legitimate entities, claiming that a significant sum of money is available for inheritance due to a fabricated tragedy, which in this case involves a Palestinian businessman. These scams primarily aim to exploit the trust of unsuspecting individuals, prompting them to provide sensitive information like names, phone numbers, and financial details. Spam campaigns can infect computers through various methods, including malicious attachments or links that direct users to harmful websites. When unsuspecting users click on these links or download attachments, malware can infiltrate their systems, leading to unauthorized access, data theft, or financial loss. Furthermore, some emails may contain deceptive pop-up ads or phishing attempts that encourage users to enter their credentials on fraudulent sites. It's crucial for individuals to remain vigilant and skeptical of unsolicited emails that promise unexpected financial opportunities, as these are often a gateway for malware infections.

How to remove Foxtrot Ransomware and decrypt .foxtrot70 files

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Discovered during a routine examination of malware submissions to VirusTotal, Foxtrot Ransomware is a nefarious variant from the MedusaLocker family. This ransomware encrypts files and appends the extension .foxtrot70 to the filenames, making previously accessible files inaccessible without the decryption key. Upon encryption, it generates a ransom note named How_to_back_files.html, which is placed in all affected directories. The note claims that files have been encrypted using a combination of RSA and AES cryptographic algorithms, a blend designed to thwart any decryption attempts without the attacker's specific key. Victims are warned against using any third-party recovery software, as this would allegedly lead to permanent data corruption. Additionally, the note ominously states that confidential and personal data has been exfiltrated and will be released publicly unless the ransom is paid within 72 hours. To instill a semblance of trust, the attackers offer to decrypt a few non-sensitive files for free.

How to remove Miia Ransomware and decrypt .miia files

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Miia Ransomware is a malicious software that belongs to the Djvu family of ransomware. It is designed to encrypt files on the victim's computer, rendering them inaccessible and appending the extension .miia to each affected file. For example, a file named document.docx would be renamed to document.docx.miia after encryption. The encryption used by Miia Ransomware is highly sophisticated, typically involving AES-256 or RSA-2048 algorithms, making it virtually impossible to decrypt files without the unique decryption key held by the attackers. Once the files are encrypted, the ransomware generates a ransom note, _readme.txt, which is placed in every folder containing encrypted files. This note provides instructions for the victim on how to contact the cybercriminals and pay the ransom, usually demanding payment in Bitcoin.

How to remove Pgp (Makop) Ransomware and decrypt .pgp775 files

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Pgp (Makop) Ransomware, known for its damaging capabilities, is a member of the Makop ransomware family. This malware encrypts the victim's data and demands a ransom for decryption. Upon infecting a system, it appends files with a unique identifier, the criminal's email address, and the .pgp775 extension, making the original files unopenable without the correct decryption key. For instance, a file named photo.jpg would be modified to something like photo.jpg.[random-id].[datarestore@cyberfear.com].pgp775. The encryption process employed by Pgp (Makop) ransomware is sophisticated and typically uses either symmetric or asymmetric cryptographic algorithms, ensuring that unauthorized decryption is nearly impossible without the attacker's private key. Post-encryption, the ransomware generates a ransom note titled +README-WARNING+.txt, which it places in every folder containing encrypted files.
I’ve Got Access to Your Smartphone e-mail spam

How to stop “I’ve Got Access to Your Smartphone” e-mail spam

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Receiving an email that claims, “I’ve Got Access to Your Smartphone,” can be a shocking experience, often designed to instill fear and urgency in the recipient. This type of email spam typically threatens individuals by stating that hackers have gained control of their devices, including access to cameras and microphones, and demands a ransom payment to avoid exposure of sensitive information. Spam campaigns usually operate by sending mass emails to a wide range of addresses, utilizing techniques such as social engineering to personalize messages and make them appear credible. While simply opening these emails does not infect computers, they often contain malicious links or attachments that, when clicked or downloaded, can install malware. This malware can include ransomware, spyware, or trojans, which can compromise personal data and system integrity. Spam campaigns often exploit vulnerabilities in email systems or user behavior, such as downloading unverified software or clicking on dubious links, to execute their attacks. Consequently, being vigilant about unexpected emails and practicing good cybersecurity hygiene is essential for preventing infections from such scams.