Articles.
I changed one number in the URL and saw another customer's orders
A client asked me for a second opinion on the app another shop had shipped. Twenty minutes in, changing one number in the address bar, I was reading another company's order on his platform. Login worked; authorization didn't. On the cheapest hole to prevent and the most expensive to find late.
Victhor Araújo
Security in AI environments: prompt injection, data leakage, and supply chain
3 new vectors arrived in 2025 with AI products: prompt injection, context leakage, and model supply chain. A senior squad treats them as platform decisions from day 1. See the 3 vectors and the right controls.
Victhor Araújo
Security isn't a feature you bolt on. It's how the team works.
There is one line in almost every software proposal I read: "we'll handle security later". That "later" has a date and a price, and it is rarely the person who promised it who pays. Why security is a team habit, not a backlog item, and how to spot it before you sign.
Raquel Reis
Premature compliance: why year-1 startups should not pursue SOC 2 (and when they should)
Did an investor or enterprise client ask for SOC 2 and the startup is about to spend 6 months + USD 100k? In year 1, it is almost always the wrong call. See the 4 criteria a senior squad uses to decide when it actually fits — and what to do instead.
Victhor Araújo
Why SMS-based MFA is worse than no MFA (and what senior squads configure in 30 min)
SMS-based MFA gives a false sense of security and opens the door to SIM swap attacks. In 2026, this attack is routine — and the alternative costs zero dollars. Here is why senior squads remove SMS from day 1.
Victhor Araújo
Threat modeling in 1 hour: the method senior squads use for teams without a security engineer
Threat modeling sounds like enterprise stuff with dedicated security teams. It isn’t. A senior squad runs it in 1 hour with 4 questions — covering 80% of real vectors. Revin delivers this by default in the Diagnostic Sprint.
Victhor Araújo
The 5 third-party SaaS nobody audits (and that become attack doors)
Devs and ops add SaaS fast. IT never audits. When someone leaves, the access stays. In 2026, these 5 SaaS are the preferred attack door in SMBs. See which ones and how a senior squad governs shadow IT by default.
Victhor Araújo
How to configure GitHub the right way: 8-step checklist
A misconfigured GitHub is the most common incident door in SMBs. 8 steps a senior squad applies on day 1 cover 90% of the risk. See the full checklist — and why this setup is shipped free with every Revin squad.
Victhor Araújo
The security baseline SMBs ignore until they get hacked — a 12-item checklist
90% of SMBs that suffered a security incident in 2026 had fewer than 8 of these 12 items in place. Here is the minimum viable security baseline for an SMB — no jargon, with deadline and priority.
Victhor Araújo
LGPD is not compliance, it is architecture — why 80% of Brazilian startups will get burned in 2026
LGPD entered the conversation as a compliance item, but real compliance depends on architectural decisions nobody made early. In 2026, Brazil’s ANPD starts enforcing sanctions more aggressively — and most startups will find out too late.
Victhor Araújo
An untested backup is not a backup: the quarterly validation protocol
Most companies have backup configured. Almost none tested it in the last year. When the incident hits, they find out the backup was broken, incomplete, or impossible to restore. See the 4-step protocol senior squads run quarterly.
Victhor Araújo
Your last vendor is still logged into your production
Every time we take over a product that ran with another vendor, one finding repeats itself: production keys held by people who left months ago, secrets committed to the repo, a root account shared by five people. A field note on the access cleanup almost nobody does, and why skipping it gets expensive.
Victhor Araújo