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ADVENT OF HACKS

Advent of Hacks is a GitHub repository with a list of free cybersecurity holiday events, CTFs, and Advent challenges.

2025.12.11
github.comGitHub repositoryTLDR InfoSec

HTTPS CERTIFICATE INDUSTRY PHASING OUT LESS SECURE DOMAIN VALIDATION METHODS

Chrome Root Program and CA/Browser Forum adopted Ballots SC-080, SC-090, and SC-091 to sunset 11 legacy Domain Control Validation methods relying on email, phone, fax, postal mail, and reverse DNS lookups by March 2028, pushing Certificate Authorities toward automated, cryptographically verifiable ACME-based validation to prevent fraudulent certificate issuance.

2025.12.11
security.googleblog.com4 min readTLDR InfoSec

PINTEREST PREDICTS 2026: 21 TRENDS

Pinterest predicts next year's trends across home, fashion, beauty, food, and travel will be nostalgic and sensory-driven. Afrobohemian home decor searches are up 220% and adire fabric 130%, while men's maximalist accessories rise 105%. Cabbage-based dishes are gaining popularity, with cabbage dumplings up 110% and golumpki soup 95%. Gen Z and Millennials are driving alien-inspired makeup up 140% and avant-garde beauty up 270%, alongside adventure travel up 75% and whimsical destinations like the Scottish Highlands up 465%.

2025.12.11
business.pinterest.com11 min readTLDR Marketing

INSTAGRAM IS GENERATING INACCURATE SEO BAIT FOR YOUR POSTS

Instagram is producing search-optimized headlines and descriptions for public posts that appear in Google results without notifying users. These headlines are created by Instagram and served only to search bots, not to regular visitors. The practice has triggered backlash from creators who say the tone and messaging contradict their personal or brand identity. The generated content is distinct from Instagram's accessibility-focused alt text and appears to be created by a separate automated system.

2025.12.11
404media.co3 min readTLDR Marketing

STELLA ARTOIS TURNS GOOGLE MAPS REVIEWERS INTO BRAND AMBASSADORS

Stella Artois activated an unconventional campaign by targeting Google Maps' Local Guides. The brand hosted top restaurant reviewers at over 40 dining locations where Stella was served as part of the meal. These guests organically posted photos and reviews, integrating the beer into discovery experiences for future diners. With no option for traditional ads on Google Maps, the strategy ensured Stella appeared in highly trusted, user-generated content at key decision points.

2025.12.11
trendwatching.com1 min readTLDR Marketing

USE CHATGPT AGENT MODE TO FIND CONTENT GAPS BETWEEN YOUR PAGE AND THE AIO

ChatGPT's Agent Mode can automate the process of comparing a page to an AI Overview and quickly reveal content gaps. In a test on the topic of ‘payroll tax vs income tax', it identified missing topics such as flat vs. progressive rate structure, separate paycheck line items, self-employment tax obligations, filing forms and responsibilities, and coverage of income types. This helps an SEO avoid manual review and speed up optimization work.

2025.12.11
linkedin.com1 min readTLDR Marketing

MARKETING LEADER 45 DAY PLAN (GOOGLE DRIVE)

This folder contains a worksheet and checklist guide that helps marketing leaders through their first 45 days to assess and influence the GTM strategy. It starts with understanding the product, customer needs, strengths, gaps, and competitive traps. Brand positioning, customer advocacy, budget, systems, and revenue health are reviewed to spot blockers. By day 45, findings are documented, cross-functional alignment is secured, and a 6-month GTM plan is created.

2025.12.11
drive.google.comTLDR Marketing

FIND HIDDEN JOBS BEFORE THEY HIT LINKEDIN USING ATS SEARCHES

Many open roles never appear on LinkedIn, especially at startups and tech companies that post first on ATS platforms like Greenhouse, Lever, Ashby, or Workable. Recruiters use X-ray searches to find candidates, and job seekers can too. For example, search Google directly: ‘site:jobs.ashbyhq.com "Growth Marketing" "Series A" "Remote"' to uncover roles before they appear on LinkedIn. Customize searches by title, location, industry, or keywords to find hidden opportunities most applicants miss.

2025.12.11
linkedin.com1 min readTLDR Marketing

YOUR DATA ISN'T PERSONAL ENOUGH FOR A WRAPPED EMAIL?

Wrapped emails don't need personal data to be effective. The key is presenting surprising or shareable stats that tell a story. Highlighting top products, company milestones, and community achievements makes customers feel part of the brand's success. Simple visuals, playful comparisons, and a clear narrative keep the email engaging and memorable. When done right, these emails validate customer choices and create a sense of collective impact.

2025.12.11
links.tldrnewsletter.com8 min readTLDR Marketing

YOU'RE RUNNING THE WRONG TYPE OF CAB

Customer Advisory Boards are often misused when one board is expected to solve every problem for every audience. Strong CABs serve a specific purpose, such as retaining executive relationships, gathering product feedback, or hosting focused discussions. Companies should start small, build for exclusivity, measure relationship depth, and integrate CABs into a larger Customer-Led Growth system. CABs are one pillar of customer strategy, not a replacement for community, education, or lifecycle programs.

2025.12.11
kevinkennethlau.substack.com10 min readTLDR Marketing

SPACEX TO PURSUE 2026 IPO RAISING FAR ABOVE $30 BILLION

SpaceX is moving ahead with plans for an initial public offering that could raise significantly more than $30 billion. It is targeting a valuation of about $1.5 trillion for the entire company. SpaceX's management and advisors are pursuing a listing as soon as mid-to-late 2026. The company is expected to produce about $15 billion in revenue in 2025, increasing to up to $24 billion in 2026.

2025.12.10
links.tldrnewsletter.com5 min readTLDR

FROM LLAMAS TO AVOCADOS: META'S SHIFTING AI STRATEGY IS CAUSING INTERNAL CONFUSION

Meta is currently pursuing a Llama successor codenamed Avocado. The model is expected to be released before the end of this year. Meta seems to have shifted from its open source stance - Avocado could be a proprietary model. Some people at Meta were reportedly upset that DeepSeek used pieces of Llama's architecture in its R1 model, so the company decided to overhaul its strategy.

2025.12.10
cnbc.com16 min readTLDR

A NEW PRODUCT, A NEW CUSTOMER, A NEW FINANCING!

Superpower is a 42MW natural gas turbine optimized for AI datacenters. Built by Boom Supersonic, Superpower is launching with a 1.21GW order from Crusoe. Boom is vertically integrating manufacturing. It plans to build a new Superfactory in Denver to make 2GW/year of turbines from raw materials.

2025.12.10
threadreaderapp.com3 min readTLDR

TESLA CEO ELON MUSK CLAIMS DRIVERLESS ROBOTAXIS COMING TO AUSTIN IN 3 WEEKS

Elon Musk says that Tesla will remove safety monitors from the passenger seats of Tesla Robotaxi vehicles in about three weeks. Passengers are currently able to use the safety monitor to take control at any time. The three-week timeline means it is possible for the driverless Teslas to be operating by the end of the year.

2025.12.10
electrek.co6 min readTLDR

FACILITATING AI ADOPTION AT IMPRINT

AI adoption is a side quest for every engineering leader in the current era. This guide shows how Imprint worked on the problem. You have to be using the tools if you want to lead an internal AI initiative. Real AI adoption on real problems is a complex blend of domain context on the problem, domain experience with AI tools, and old-fashioned IT issues. Model selection matters a lot.

2025.12.10
lethain.com15 min readTLDR

THE RISE OF THE 0.1X ENGINEER

Coding assistants allow anyone to become a 10x engineer. However, it is the 0.1x engineers who will soon be the most valuable. These engineers carefully curate code and set the right patterns rather than prompting to add code. It is really easy to add bloat to a code base, but really hard to differentiate dead code from LLM slop leftovers.

2025.12.10
jerpint.io1 min readTLDR

OPENAI HIRES SLACK CEO DENISE DRESSER TO LEAD GLOBAL REVENUE STRATEGY

OpenAI has hired Slack's CEO, Denise Dresser, as its chief revenue officer. Dresser will oversee OpenAI's global revenue strategy across both customer success and enterprise. She was an executive at Salesforce for more than a decade before being named as Slack's CEO in 2023. OpenAI is on track to reach more than $20 billion in annualized revenue run rate this year. It plans to grow to hundreds of billions in sales by 2030.

2025.12.10
cnbc.com2 min readTLDR

THE BUBBLE IS LABOR

Companies only hire people because they can't do all of the work themselves. If every founder could handle all of the tasks themselves, there wouldn't be anywhere near the number of jobs we have today. The only reason the current labor market exists is because there's a group of founders/owners who need help producing their goods and services. These people aren't required to hire anyone, and the moment they can do the work themselves, they will.

2025.12.10
danielmiessler.com4 min readTLDR

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2025.12.10
tldr.techSponsorTLDR

CONFRONTING CAREER INEQUALITIES

It is important to acknowledge the gap in compensation among teams to ensure that work is produced at a net-positive for the organization.

2025.12.10
playfulprogramming.com4 min readTLDR

OPENAI TESTING NEW IMAGE-2 MODELS ON LM ARENA

OpenAI is preparing to roll out its next generation of image generation models along with GPT-5.2. Two new models have appeared on online evaluation platforms. Early testers note a substantial increase in image detail and fidelity. The upgrade brings OpenAI's image generation closer to the standard set by Google Nano Banana 2. Examples of images generated with the models are available in the article.

2025.12.10
testingcatalog.com2 min readTLDR AI

GLM-4.6V: OPEN SOURCE MULTIMODAL MODELS WITH NATIVE TOOL USE

GLM-4.6V (106B), a foundation model designed for cloud and high-performance cluster scenarios, and GLM-4.6V-Flash (9B), a lightweight model optimized for local deployment and low-latency applications, have been open-sourced. GLM-4.6V scales its context window to 128k tokens in training. It achieves SoTA performance in visual understanding and reasoning among models of similar parameter scales. The model has native Function Calling capabilities.

2025.12.10
z.ai7 min readTLDR AI

INTRODUCING DEVSTRAL2 AND MISTRAL VIBE CLI

Devstral 2 hits 72.2% on SWE-bench Verified with 123B parameters, making it one of the best open-weight coding models despite being a fraction of the size of its peers. The 24B Devstral Small 2 scores 68.0% and runs on consumer hardware. Mistral also launched Vibe CLI, an open-source terminal agent that orchestrates multi-file changes across codebases.

2025.12.10
mistral.ai5 min readTLDR AI

HOW PEOPLE USE AI AT WORK

Professionals use AI for grunt work and first drafts. It is never trusted without supervision. Artists use AI to handle admin work so they have more time for creative work. Researchers find that the time required to fact-check AI output often negates the efficiency gains. The primary barrier to AI adoption is hallucination.

2025.12.10
dejan.ai12 min readTLDR AI

2025: THE STATE OF GENERATIVE AI IN THE ENTERPRISE

The shift to enterprise AI is no longer speculative. Enterprise AI is now a $37 billion market. It is the fastest-scaling category in software history. AI is becoming the core of how work gets done across industries, and enterprises, seeing real returns, are doubling down.

2025.12.10
menlovc.com32 min readTLDR AI

THERE IS NO DATA-GENERATING DISTRIBUTION

The data-generating distribution is a convenient mnemonic crutch for machine learning engineers. However, it isn't necessary for understanding machine learning. The same methods are used regardless of whether the world is producing randomness. We need to figure out when we actually need statistical models of data.

2025.12.10
argmin.net8 min readTLDR AI

HOW PEOPLE USE AI AGENTS

A large-scale usage study from Perplexity and Harvard reveals that over half of AI agent tasks involve deep cognitive work like research and productivity, challenging the stereotype of agents as simple task-doers.

2025.12.10
links.tldrnewsletter.com7 min readTLDR AI