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Daily Edition · Page 5

THE DAILY INDEX

Technology, AI, software, security, crypto and business

ATTACKS & VULNERABILITIES

TLDR InfoSec

TLDR InfoSec

MAKING FILE ENCRYPTION FAST AND SECURE FOR TEAMS WITH ADVANCED KEY MANAGEMENT

Dropbox describes how it solved for Hardware Security Module (HSM)-backed, team-based file encryption, where files are encrypted at rest and access can be removed instantly while also prioritizing usability at scale. End-to-end encryption would make it impossible for Dropbox to offer file content search, and traditional team-based key management, where a top-level key is used to derive unique keys for each file, would be prohibitively slow due to Dropbox's file storage architecture. To solve this problem, Dropbox introduced namespace encryption keys, which are derived from an HSM-backed top-level key and are used to derive team encryption keys. When sharing files, Dropbox can temporarily share the namespace encryption key while it reencrypts the blocks with team encryption keys.

dropbox.tech · 5 min

TLDR InfoSec

GO GET 'EM: UPDATES TO VOLEXITY GOLANG TOOLING

Volexity's GoStringExtractor is a plugin utility for IDA Pro and Ghidra that helps analyze string data in Go binaries for reverse engineering and detection purposes. The tool addresses challenges in analyzing Go binaries where strings are stored in contiguous tables without individual termination, and includes data from all linked packages. This enhancement aids security researchers in better understanding malware behavior and developing detection signatures for Go-based threats.

volexity.com · 4 min

TLDR InfoSec

JUSTICE DEPARTMENT ANNOUNCES COORDINATED DISRUPTION ACTIONS AGAINST BLACKSUIT (ROYAL) RANSOMWARE OPERATIONS

The Justice Department conducted coordinated disruption actions against the BlackSuit (Royal) ransomware group on July 24, seizing four servers and nine domains. Law enforcement also recovered approximately $1 million in laundered proceeds from the ransomware operations. This represents a significant enforcement action against one of the active ransomware groups targeting organizations worldwide.

links.tldrnewsletter.com · 2 min

TLDR InfoSec

HOW TOOL CALLING WORKS IN LLMS

LLMs use tools, external functions, or APIs when a user makes a request that the model cannot fulfill given its internal knowledge base. During inference, an LLM is provided with a series of tool definitions as part of its input prompt or context window, much like providing a human with a series of external functions and their documentation. When the LLM detects that a tool must be called, it ranks potential tools based on their relevance to the task and then calls the appropriate tool to address the user's query.

newsletter.scalablethread.com · 4 min

TLDR InfoSec

MUDDYWATER'S DARKBIT RANSOMWARE CRACKED

Cybersecurity firm Profero has cracked the Iranian-backed MuddyWater's DarkBit ransomware, allowing clients to recover their data without paying a ransom. Profero found that the key generation method that DarkBit uses is weak and can be brute-forced. It also discovered that VMDK files on ESXi servers are sparse, and much of the content that its clients needed could be recovered without needing to brute-force the decryption. Profero is not publicly releasing its decryptor but urges victims to contact them.

bleepingcomputer.com · 2 min

TLDR IndexPage 5