"A URL shortener" sounds like a weekend project. Slug in, long URL out, 302, done. That's what I thought too. Then real usage showed up: links opened inside Instagram's in-app browser and didn't convert, bot traffic wrecked the analytics, and one link needed to send a US visitor somewhere different from an EU visitor. Suddenly the "trivial" part... Weiterlesen
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I built a link shortener with FastAPI and htmx (no JS framework) — the parts that were actually hard
"A URL shortener" sounds like a weekend project. Slug in, long URL out, 302, done. That's what I thought too. Then real usage showed up: links opened inside Instagram's in-app browser and didn't convert, bot…
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Syntax validiert (0 Fehler)
title: Detect Exploitation - I built a link shortener with FastAPI and htmx (no JS framework) — the parts that were actually hard
id: 2dba6ede-73e4-4f06-af94-f0fc3698320e
status: experimental
description: Automatisch generierte SIEM-Erkennungsregel basierend auf CTI Intelligence
references:
- https://tsecurity.de/
author: iShareStuff CTI Automated Detection Engine
date: 2026-09-25
logsource:
category: network_connection
product: any
detection:
selection:
CommandLine|contains:
- 'exploit'
condition: selection
falsepositives:
- Legitime administrative Zugriffe oder Penetrationstests
level: high
tags:
- attack.initial_accessSyntax validiert (0 Fehler)
rule CTI_Threat_Indicator {
meta:
author = "iShareStuff CTI Automated Detection Engine"
date = "2026-09-25"
description = "YARA Signature for "
strings:
$str = "I built a link shortener with " ascii wide
condition:
any of them
}Syntax validiert (0 Fehler)
index=security sourcetype IN ("cisco:asa", "pan:traffic", "zeek_conn", "suricata", "WinEventLog:Security")
("I built a link shortener with FastAPI an")
| stats count earliest(_time) as first_seen latest(_time) as last_seen by src_ip, dest_ip, dest_host, signature
| eval first_seen=strftime(first_seen, "%Y-%m-%d %H:%M:%S"), last_seen=strftime(last_seen, "%Y-%m-%d %H:%M:%S")
| sort - countSyntax validiert (0 Fehler)
message: "*I built a link shortener with FastAPI an*"Syntax validiert (0 Fehler)
CommonSecurityLog
| where Message has "I built a link shortener with FastAPI an"
| summarize EventCount = count(), FirstSeen = min(TimeGenerated), LastSeen = max(TimeGenerated) by SourceIP, DestinationIP, DestinationPort, Activity
| extend DetectionRule = "iShareStuff-CTI-Compiled"
| sort by EventCount desc2. Cyber Threat Intelligence & Forensik
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Reconnaissance
-
Resource Development
-
Initial Access
Execution
Persistence
-
Privilege Escalation
Defense Evasion
Credential Access
-
Discovery
-
Lateral Movement
-
Collection
-
Command and Control
Exfiltration
-
Impact
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Fokus-Vektor:
Kognitive Analyse für identifizierte Bedrohung: Erhöhte Bedrohungslage im Bereich I built a link shortener with FastAPI an.... Basierend auf 368k Vektor-Korrelationen werden sofortige Isolationsmaßnahmen für betroffene Endpunkte empfohlen.
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- 3. Telemetrie & EDR-Alerts: Prozessaufrufe und Child-Processes auf anomale Shell-Spawns überwachen.
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