Security Affairs

JUNE 11, 2019

This layer is quite different because it contains a junk-char enriched hexadecimal code, actually XOR encrypted with the 0x52 key. Figure 4: Ursnif loader communication. In this case, the steganography technique is not the same as the one seen in the other branch, in fact the malware also uses a layer of the AES encryption.

e-Delivery 71

e-Delivery Encryption Libraries IT 71

Security Affairs

MARCH 2, 2019

The first port is used to maintain communications between C2 and clients. OLE files are hierarchical data structures that have several storages and streams (in contrast to folders and files in an operating system). Figure 8 below shows the structure of the xls file. The C2 server used by crooks is now offline.

File names 85

File names Phishing Libraries IT 85

eSecurity Planet

JULY 28, 2021

Blockchains are unique from other distributed ledger types due to their data structure, sequence, power needs, real-life implementation, and the use of tokens. Since the 1970s, Public Key Infrastructure (PKI) has offered encryption , authentication, bootstrapping, and digital signatures to secure digital communications.

Blockchain 135

Blockchain Cybersecurity Energy and Utilities IoT 135

Imperial Violet

JULY 22, 2023

The credential ID that they return is actually an encrypted seed that allows the security key to regenerate the private key as needed. So the security key has a single root key that it uses to encrypt generated seeds, and those encrypted seeds are the credential IDs. Connecting U2F to the web FIDO defined a web API for U2F.

Authentication 89

Authentication Passwords Metadata Security 89