Cheat Sheets · Free Reference
Cheat Sheets
Fast, searchable, copyable references for developers and security analysts. Everything in one place, pick a topic below.
Cheat sheets
7
Entries
497
Groups
4
Seven references, 497 entries, all on one page each. No pagination, no accordion hiding the row you came for: open the sheet, use your browser's find, copy the value, close the tab.
- Reading a packet capture or a scan
- Network ports and CIDR cover what you will hit first.
- Debugging an HTTP call
- Status codes and MIME types, both with what actually causes them.
- Writing a pattern against logs
- The regex sheet, then the tester to check it on real input.
- Decoding something by hand
- ASCII and HTML entities, in decimal, hex, octal and binary.
01
Network
Reading a packet capture or a scan: ports and address ranges.
02
Web and HTTP
Debugging an HTTP call: status codes and content types.
03
Patterns
Writing a pattern against logs.
04
Encoding
Decoding something by hand, character by character.
While you are here
Ransomware Response: The Decisions That Matter in the First 24 Hours
Ransomware response is a sequence of decisions, not a timeline. Isolate or observe, verify backups before promising recovery, scope exfiltration, and start the legal clocks on time.
The First 60 Minutes: An Incident Response Checklist That Works Under Stress
When an alert turns real, the first hour decides the investigation. A concrete checklist for validating, scoping, preserving evidence, and avoiding the mistakes that cannot be undone.
The Attack Surface You Forgot: Scanning Your Own Infrastructure
Attackers scan your perimeter every day. Most organizations scan their own once a year. Here is what external recon on yourself reveals, and why continuous beats annual.
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