Tag Archive for: Sep…

Decoding the Mystery of Encryption: The Power of Public and Private Keys | by Yash Gupta | Sep, 2023


“In the world of encryption, the key to understanding is just a public and private key away.” — Anonymous

In the digital world, the concept of encryption is as ubiquitous as it is vital. It is the bedrock of internet security, safeguarding our data from prying eyes. Encryption is the process of encoding information in such a way that only authorized parties can access it. It is a complex yet fascinating subject, and understanding it requires a deep dive into the realm of public and private keys.

Public and private keys form the basis of today’s encryption

The world of encryption is a labyrinth of complex algorithms and mathematical equations, but at its core, it is a simple concept. It is a method of transforming plain text into an unreadable format, known as ciphertext, to prevent unauthorized access. The process of converting the ciphertext back into its original form is known as decryption.

The two primary types of encryption are symmetric and asymmetric encryption. Symmetric encryption uses a single key for both encryption and decryption. However, it has a significant drawback: the key must be shared between the sender and receiver. This sharing can lead to potential security risks.

Asymmetric encryption, on the other hand, uses two keys: a public key for encryption and a private key for decryption. This method is also known as Public Key Infrastructure (PKI). The public key is available to everyone, while the private key is kept secret by the owner. This method eliminates the need to share keys, thereby enhancing security.

The concept of public and private keys is akin to a mailbox. Anyone can drop a letter (encrypt data) into the mailbox using the visible slot (public key), but only the person with the key to the mailbox (private key) can open it and read the letters (decrypt the data).

The process of generating these keys involves complex mathematical algorithms. The most common algorithm used is the RSA (Rivest-Shamir-Adleman) algorithm. It generates two large prime numbers and multiplies them. The complexity of factoring large prime numbers ensures the security of RSA encryption.

The beauty of public and private keys lies in their interdependence. The public key is used…

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Ransomware : The Silent Threat to Data Security | by Shellmates Club | Sep, 2023


released by our members : Ait Si Amer Sara, Belharda Aya ,Mechitoua Ikram

Ransomware, the dark specter of the digital realm, is a malevolent form of malware that thrives on fear. It operates by wielding a digital guillotine over its victims, either locking them out of their own data or encrypting it to an unreadable state. The malefactors behind ransomware attacks then exploit this digital stranglehold to demand a ransom for the safe return of the hostage data. This menacing digital charade often begins with a Trojan horse, a seemingly innocent file that dupes the user into downloading or opening it.

Ransomware’s arsenal of infiltration tactics includes:

  1. Phishing Emails Using Social Engineering: Attackers impersonate authority figures, crafting cunning phishing emails to trick employees into clicking malicious links.
  2. Malvertising and Exploit Kits: Malvertisements and exploit kits sow the seeds of ransomware through deceptive pop-ups and concealed malicious code. Exploit kits scan for vulnerabilities to initiate their attacks.
  3. Fileless Attacks: These stealthy techniques sidestep traditional antivirus solutions by exploiting system tools like PowerShell, eliminating the need for malicious files.
  4. Remote Desktop Protocol (RDP) Exploitation: Cybercriminals prey on RDP vulnerabilities to gain unauthorized access, surreptitiously leaving back doors for future maleficent endeavors.
  5. Targeting Managed Service Providers (MSPs) and Remote Monitoring and Management (RMM) Software: MSPs’ RMM software can become conduits for data breaches, imperiling both the MSP and its clients.
  6. Drive-By Downloads: Ransomware deploys drive-by attacks to exploit web browser vulnerabilities and infect devices without user interaction, often leading to data theft.
  7. Pirated Software: Illicit copies of software, bereft of automatic updates, provide fertile ground for ransomware proliferation.
  8. Network Propagation: Modern ransomware strains wield the power of self-propagation within networks, infecting multiple devices, and crippling organizations.
  9. Malware Obfuscation: Some ransomware groups employ open-source software protection tools to obfuscate their malware, complicating detection.
  10. Ransomware as a Service (RaaS) and…

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Cyber Security Tips. By Rabia Rabbani / Technology | by Rabia Rabbani | Sep, 2022


Cyber Security Tips

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Pixel 2/2 XL Get Sep. Security Patch Factory/OTA Images – Android Headlines


Android Headlines

Pixel 2/2 XL Get Sep. Security Patch Factory/OTA Images
Android Headlines
The Pixel 2 and Pixel 2 XL have received the September security patch via factory and OTA images if you're looking to make sure that your latest smartphone is mostly up to date with fixes for potential security vulnerabilities. It's worth noting that

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