Alright, future engineers!

**Z-score:** Measures how many standard deviations a data point is from the mean. Formula: `Z = (X - mu) / sigma`. Pro-Tip: Use it to standardize diverse datasets for fair comparison, crucial for understanding relative position!

#Stats #DataAnalysis #STEM #StudyNotes

Alright, future engineers!

**Standard Deviation (SD):** Measures how spread out data points are from the mean. Ex: Test scores w/ SD=2 are consistent; SD=10 means wide range. Pro-Tip: Smaller SD = more reliable/consistent data, crucial for quality control!

#Stats #DataAnalysis #STEM #StudyNotes

Good CTE, Bad CTE

https://boringsql.com/posts/good-cte-bad-cte/

#HackerNews #GoodCTE #BadCTE #SQL #DataAnalysis #BoringSQL #HackerNews

Seeing Like a Spreadsheet

https://davidoks.blog/p/how-the-spreadsheet-reshaped-america

#HackerNews #Seeing #Like #a #Spreadsheet #spreadsheets #dataanalysis #innovation #America

🎯 𝗗𝗜𝗚𝗜𝗧𝗔𝗟 𝗥𝗜𝗦𝗞𝗦, 𝗙𝗜𝗡𝗗𝗜𝗡𝗚 𝗠𝗘𝗔𝗡𝗜𝗡𝗚 𝗜𝗡 /𝗗𝗘𝗩/𝗡𝗨𝗟𝗟 - Paul Jung ✨( @Thanat0s )

🔍 The dead Internet speaks, and someone is listening 📡

A network telescope — a passive monitor of unused IP space — captures the invisible: unsolicited traffic, botnet noise, scanning waves, and misconfigurations that would otherwise vanish. Unused IP addresses are full of secrets, from botnets and scanners to early warnings of new threats. In this talk, Paul shows how monitoring the internet’s “dead zones” reveals what’s really happening online.

Paul Jung is a senior security professional with 20+ years’ experience in cybersecurity, incident response, and digital forensics. He is a former Senior Security Architect at the European Commission and founded TCS-CERT at Excellium Services (acquired by Thales Group).

📅 Conference Dates: 6–8 May 2026 | 09:00–18:00
📍 14, Porte de France, Esch-sur-Alzette, Luxembourg
🎟️ Tickets: https://2026.bsides.lu/tickets/
📅 Schedule: https://pretalx.com/bsidesluxembourg-2026/schedule/

#BSidesLuxembourg #NetworkTelescope #CyberSecurity #OSINT #ThreatIntelligence #DataAnalysis