Access and credential management: risk through the front door
The hardest attacker to notice is the one who logs in with a valid username and password, and there is almost always a forgotten account waiting.
Cybersecurity, risk and compliance, explained for the people who have to decide.
Guides on ransomware, phishing, SOC, pentesting, ISO 27001, NIST CSF, LGPD, Brazilian Central Bank regulation and risk analysis — with the official source for every claim.
Threats and security operations
Backup and cyber resilience: beyond the 3-2-1 rule
Having copies is not the same as being able to recover — and ransomware targets exactly that gap.
Red Team, Blue Team and Purple Team: what each one does
Attack, defense, collaboration and governance: the role of each team and when your company is ready for each one.
Traditional vs. modern SOC: what to expect from a 24×7 SOC
Seeing alerts is not reducing risk. What sets the modern SOC apart, which metrics to track and how to evaluate an outsourced SOC.
Phishing and social engineering in the AI era: what changed
AI has removed the spelling mistakes; what still gives a scam away is the request — urgency, an exception to the process and secrecy.
Ransomware and RaaS: how to prepare your company
Ransomware is now an industry of affiliates and double extortion; preparing means prevention, detection, tested backups and a plan agreed before the crisis.
Network Secure's SOC is ISO 27001:2022 certified
Monitoring, detection, analysis and incident response audited against the latest version of the standard — and what that guarantees to customers.
Cyber risk
Risk appetite: from sentence to number
A statement approved in the minutes does not tell an analyst what to do. How to turn appetite into a limit, and a limit into acceptance criteria.
The 5×5 matrix does not say what risk costs
The heat map ties together risks two orders of magnitude apart. When the decision is about budget, a colour is not enough.
ISO 27005: the risk assessment 27001 demands
The standard you get audited against demands a risk assessment and does not say how to run one. ISO 27005 answers that — and it changed in 2022.
CROC: when detecting threats is no longer enough
Companies have security data to spare. What they lack is a way to turn it into risk decisions. The CROC is the layer that builds that bridge — without replacing the SOC.
Cyber risk scoring: when a score helps and when it misleads
A risk score is useful when it shows a trend and points to where to act. It is dangerous when it becomes an average that hides the worst asset.
Cyber Risk Quantification (CRQ): cyber risk in money
Quantifying means swapping the heat-map colour for a loss range with a probability. Here is how the model works inside and where it usually fails.
Standards and frameworks
NIST CSF 2.0: the six functions and what Govern changed
Version 2.0 added Govern and dropped the critical-infrastructure framing. What changes, and how it sits alongside ISO 27001.
ISO 27001 checklist: the 93 Annex A controls
The 93 controls across four themes, the eleven that are new in 2022, and what an auditor accepts as evidence.
ISO 27000, 27001 and 27002: what is the difference
The numbers look alike; the roles do not. What each standard in the 27k family does, and which one you actually need.
What ISO 27001 is, and what it is actually for
Not a list of IT controls. What the standard actually requires, what changed in 2022, and when certification pays off.
Vulnerabilities and exposure
Pentest vs. vulnerability scan: which to choose and when
A scan shows which known flaws exist; a pentest shows what an attacker can actually do with them.
48,000 CVEs a year: where to start
Nobody fixes 48,000 vulnerabilities a year. The question is not how many you close but which — and CVSS alone answers that badly.
CVSS 4.0: how to read a vulnerability score
The same flaw can score 9.3, 8.1 or 6.5 in CVSS 4.0. The difference lies in the metric groups almost nobody fills in.
Regulation and third parties
Brazil's CMN Resolution 5,274/2025: what changed for financial sector cybersecurity
Compliance deadline passed in March 2026. The 14 mandatory minimum controls, the Pix requirements, and what ISO 27001 already covered.
Third-party risk and CMN Resolution 4,893
An institution that outsources data processing or cloud still answers for the service. What the rule requires, article by article.