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Fofd Ransomware (version of STOP Ransomware or DjVu Ransomware) is a high-risk widespread encryption virus, that first appeared near 5 year ago. It experienced several visual and technical changes throughout the time. In this tutorial, we will analyze recent versions of this dangerous malware. In the very end of April 2023, STOP Ransomware started to add following extensions to encrypted files: .fofd. It is because of that, it got the name "Fofd Ransomware" although it is just one of the varieties of STOP crypto-virus. The virus also modifies "hosts" file to block Windows updates, antivirus programs, and sites related to security news or offering security solutions. The process of infection also looks like installing Windows updates, malware shows the fake window, that imitates the update process. A new subtype of STOP Ransomware uses same e-mail addresses, as few previous generations: support@freshmail.top and datarestorehelp@airmail.cc. Fofd Ransomware creates _readme.txt ransom note file.

WannaCry (also referred to as Wcry, Wana Decrypt0r 2.0, WanaDecryptor, and WNCRY virus) is a ransomware infection that encrypts personal files using AES-128 algorithms and demands victims to pay for decryption. The virus was discovered by a security researcher S!Ri and there are a couple of known WannaCry variants. Depending on which variant attacked the system, files affected by encryption will be altered using the .wcry, .wncry, or WNCRYT (for encrypted .bmp files). For instance, a file like 1.pdf will change to 1.pdf.wcry or similarly depending on the ransomware version. Following this, the virus displays decryption instructions in a force-opened pop-up window. One of the variants changes the desktop wallpapers as well. The Wana Decrypt0r 2.0 variant also creates a separate ransom-demanding note called @Please_Read_Me@.txt.

If your files recently got .foty extensions, that means your PC is infected with an encryption virus called Foty Ransomware (part of STOP Ransomware or Djvu Ransomware family, called so because the first versions of the virus of this type appended .djvu extension). This is a very widespread and actively distributed malware. Ransomware initially used the AES-256 encryption algorithm, and there was no way for decryption. However, if during the encryption process the infected PC was out of the internet, or connection with a remote server of hackers was interrupted your files can be decrypted, using methods provided below. STOP Ransomware has a ransom note called _readme.txt. In this text file, malefactors give contact information and details on how to make a payment. The virus copies it on the desktop and in the folders with encrypted files. Hackers provide following contacts, e-mails: support@freshmail.top and datarestorehelp@airmail.cc.

Foza Ransomware is a devastating encryption virus from the series of STOP Ransomware (Djvu Ransomware). Foza Ransomware is a variant of the STOP/Djvu Ransomware family, which is known for using a combination of two encryption algorithms: RSA and AES. RSA is used to encrypt the symmetric AES key that is generated for each file. This means that each file has its own unique AES key, which is used to encrypt and decrypt the file's contents. The RSA key pair is generated by the ransomware on the victim's computer and the public key is sent to the attacker's server, which is then used to encrypt the symmetric AES key. It has got its name from .foza extension, that ransomware adds to the end of encrypted files. From a technical point of view, the virus remains the same as previous versions. Only thing that changes during past couple of years is contact details of malefactors.

Some users may encounter an App Store error saying Cannot Connect to App Store or Unable to connect to the App Store. As a result, this problem prevents iPhone/iPad owners from using the market, and downloading, re-installing, and updating apps. The reason why this error occurs is most often related to some connection or server issue. For example, users may not have the proper Internet connection, or App Store servers could be temporarily down as well. In some cases, it may also be a software issue when iPhone/iPad needs to be updated for the error to get resolved. Our guide below features multiple solutions that you can try to remove the error and get App Store back to working again. We advise you to follow each method in the sequence below until one of them eventually turns down the error.

Kafan is a new ransomware virus that infects Windows users in order to encrypt personal data and extort money for its decryption from victims. Once installed, the ransomware will run a quick scan of the stored data and start the encryption process using strong cryptographic algorithms. In addition, the malware will also assign its own .kafan extension to distinguish locked files. For instance, a file originally named 1.pdf will change to 1.pdf.kafan and become no longer accessible. Lastly, the file encryptor generates a ransom note called help_you.txt with instructions on how to return the data. The ransom message necessitates victims to send an e-mail message to cybercriminals (PYTHONHAVENONAME@163.COM) and pay for decryption. While sending the message, victims are also asked to write their ID in the message title/subject. The price for decryption is said to depend on how fast victims establish communication with the attackers. Cybercriminals employ such manipulation techniques to put extra pressure on victims and potentially force them into agreeing to pay the ransom.

Can't install app message accompanied by error code 504/505 is encountered by some users when trying to install or update applications in Google Play Store. Eventually, users are left totally confused not knowing what should be done in order to resolve the issue. Here is the full message that users are likely to see when facing this error: "App Name" can't be installed. Try again, and if the problem continues, get help troubleshooting.(Error code: -504/505). Unfortunately, it is hard to tell the exact and universal reason why this problem occurs. The error can equally be related to connection issues, corrupted/overloaded Google Play cache, or various bugs within the smartphone itself. By following our guide below, you will most likely resolve the issue and get your Google Play Store back to working again. Simply try each solution as written below until one of them eventually rectifies the "Can't install app" error code 504/505 problem.

0x800b010a is an error code that may appear while trying to search for or install new updates in practically any Windows version (7, 8, 8.1, 10, 11). If the problem arises when updates are searched for, then it is likely due to some network connection problem. Thus, make sure you have an Internet connection and no VPN/Proxy is being used when updating. Unless it is the Internet problem, 0x800b010a may also be related to corruption in system files, problems with Windows update services, incompatibilities caused by third-party security software (like antivirus), or even a malware infection that damaged certain system segments or intentionally prevents updating. Whatever it is, you will be able to approach this error in a step-by-step manner and try each proposed solution from our guide below. Please note that instructions for this guide were mostly made based on Windows 11, however, they look almost the same on other Windows versions as well.