TLDR InfoSec

TLDR INFORMATION SECURITY 2025-05-29

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01GENERAL

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hubs.la

02ATTACKS & VULNERABILITIES

TIFFANY CONFIRMS DATA BREACH IN SOUTH KOREA FOLLOWING DIOR INCIDENT

Tiffany & Co. confirmed a data breach affecting customers in South Korea after notifying affected customers via email. This attack involved unauthorized access to a vendor platform using customers' data. The exposed data includes names, addresses, phone numbers, email addresses, internal customer ID numbers, and purchase data.

chosun.com1 min read

DATA BROKER GIANT LEXISNEXIS SAYS BREACH EXPOSED PERSONAL INFORMATION OF OVER 364,000 PEOPLE

LexisNexis Risk Solutions disclosed a data breach that affected over 364,000 people after a hacker accessed their GitHub account on December 25. Stolen data includes names, Social Security numbers, and driver's license information. The data broker, which profits from collecting consumer information for fraud detection and risk assessment, was notified of the breach on April 1.

techcrunch.com2 min read

03STRATEGIES & TACTICS

AWS HONEY TOKENS: THE GOOD, THE BAD, AND THE UGLY

AWS honey tokens are AWS Access Keys strategically placed across a system and used as a digital tripwire to determine when an attack has breached the system. The Canarytokens project by Thinkst is an open-source implementation that utilizes two Lambda functions to create a honey token system that notifies users via CloudWatch of any token usage. This project has two drawbacks: it uses an easily identifiable naming scheme for generating tokens, and it only appends a timestamp when the event is received by CloudWatch, which will have a delay that can hamper event correlation.

deceptiq.com10 min read

WHY PROMPTS ARE THE NEW IOCS YOU DIDN'T SEE COMING!

As proven by the Anthropic report on the malicious uses of Claude, threat actors are increasingly using LLMs to aid in their activities. Prompts should be classified as IoCs, or LLM TTPs. Prompts can be used to construct NOVA threat hunting rules based on possible prompts for the scenarios identified in the Anthropic report.

links.tldrnewsletter.com8 min read

SECURITY LEADERS LOSE VISIBILITY AS CONSULTANTS DEPLOY SHADOW AI COPILOTS TO STAY EMPLOYED

This post dives into how consulting firms are changing and creating Shadow AI tools to keep up with demand. Consulting firms are experiencing AI-driven layoffs, cutting thousands of jobs, and fearful employees are creating unauthorized "shadow AI" apps using Python and various AI APIs to stay relevant. An estimated 74,500+ shadow AI tools now exist across consulting firms, creating security risks and governance challenges for IT departments.

links.tldrnewsletter.com7 min read

04LAUNCHES & TOOLS

CERBY (PRODUCT LAUNCH)

Cerby automates identity workflows across over 2,000 applications and is used by organizations across sectors such as healthcare, manufacturing, online collaboration, retail, SaaS, streaming, telecommunications, and workplace training.

cerby.com

NOVA

The NOVA framework is an open-source prompt pattern matching system combining keyword detection, semantic similarity, and LLM-based evaluation to analyze and detect prompt content.

github.comGitHub repository

WOODPECKER

woodpecker is a modular red teaming tool focused on AI and cloud apps. The tool is designed to discover security weaknesses by experimentation.

github.comGitHub repository

05MISCELLANEOUS

SOUTH KOREA WIDENS HACKING PROBE TO NAVER, KAKAO, COUPANG

Following the major breach on South Korea's SK Telecom, the South Korean government has investigated potential hacking attempts targeting major domestic platform service providers. The government had initially asked these companies to conduct voluntary self-assessments after news of the SK Telecom breach first surfaced. However, the Korea Internet & Security Agency will now take over the investigations.

chosun.com2 min read

MICROSOFT ENTRA DESIGN LETS GUEST USERS GAIN AZURE CONTROL, RESEARCHERS SAY

BeyondTrust researchers found that guest users in Microsoft Azure can create and transfer Azure subscriptions, gaining "Owner" privileges without admin approval. Guests with billing authority can use Microsoft's transfer feature to move subscriptions, bypassing normal access controls. Microsoft states this supports multi-tenant scenarios, but enabling it by default poses significant security risks that organizations need to address with subscription policies and guest account audits.

hackread.com3 min read