Data is a big thing now a days. Data is everywhere. Data is collected on almost as many places. And a lot of people want to access your data. But why exactly is your data important? What can people / companies do with it? How can I keep my data safe. or that of my company? How do criminals get to your data? and most importantly, what can you do to avoid the fact that they steal your data?
Understanding Discord NSFW Servers A Guide for Responsible Users.pdf
Security, you are also part of the game
1. Open solutions, smarter people
Security
You are also part of the game
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
2. Open solutions, smarter people
Who is that guy?
• Bert Desmet
• 23 years old
• Fedora – Ambassador, mentor, packager
• Loadays – Co organizer
• Numius – System Engineer, Consultant
• Devnox – Developer, System Engineer
3. Open solutions, smarter people
Today's topics
• I'm a good hacker.
• Why I love USB sticks.
• Remember your password?
• Shhhhhhht!
14. Open solutions, smarter people
Some thoughts about it
• Encrypt your sensitive data
• Never put passwords on your system
• Use the intranet
• Never leave your portable gear alone
• Never forget your gear
15. Open solutions, smarter people
Some statistics
• 53% of UK workers lost portable devices
– >50% at a drinking venue
• Taxis and public transport
• 1 lost data record cost more than $187
– 70% indirect cost
• Lost costumers
17. Open solutions, smarter people
How to choose a password
• Avoid using dictionary words
• Use special characters and numbers
• Change your password every month
• Blah blah blah
18. Open solutions, smarter people
How to choose a password
• Avoid using dictionary words
• Use special characters and numbers
• Change your password every month
• Blah blah blah
19. Open solutions, smarter people
Entropy
• H : Entropy
• N : Possible symbols
• Length of string
H= L∗log2 N
20. Open solutions, smarter people
Example time!
• This is.obviously a.bad passw0rd:-(
– L : 35
– W : 94
– H : ±230
• PrXyc.N(n4k77#L!eVdAfp9
– L : 23
– W : 94
– H : ±151
21. Open solutions, smarter people
Time to crack a password
• [[Guesses before string is found = 2H]]
• This is.obviously a.bad passw0rd:-(
– 2230 = 1.72543659 × 1069
– 1000 guesses /s = 5.5 x 1058 years
• PrXyc.N(n4k77#L!eVdAfp9
– 2151 = 2.85449539 × 1045
– 1000 guesses /s = 9 × 1034 years
39. Open solutions, smarter people
Questions?
• Bert Desmet
• Security, you are also part of the game
• Mail: Bert@devnox.eu
• Twitter: @bdesmet_
• Website: http://blog.bdesmet.be
• Website: http://www.devnox.eu
• This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
40. Open solutions, smarter people
Sources
• Chess game: http://www.flickr.com/photos/seeminglee/1479932683/
• Closed vault: http://www.flickr.com/photos/mstyne/3654056683/
• Open vault: http://www.flickr.com/photos/spotsgot/156025944/
• Onion: http://www.flickr.com/photos/inferis/107293622/
• Laptop + usb stick: http://www.flickr.com/photos/wstryder/2780310027/
• New York Public Library: http://www.flickr.com/photos/paul_lowry/2616820493/
• Statistics on loosing gear: http://www.securestix.com/bad_news.php
• Shoulder surfing: http://www.flickr.com/photos/bonzoesc/209474964/
• Dumpster: http://www.flickr.com/photos/urbanjacksonville/1803065217/
• Telephone call: http://www.flickr.com/photos/lst1984/994531885/
• Taking pictures: http://www.flickr.com/photos/glenpooh/708845839/
• Xkcd joke: http://xkcd.com/936/
• Shut up: http://www.flickr.com/photos/lorenia/934705558/
• 3way handhake: http://media.photobucket.com/image/3%20way%20handshake/Haley_Bug/Mission%20Trip%20Choir%20Tour%202006/100_0087.jpg?o=1
• Yubikey: http://www.flickr.com/photos/thofle/3206443137/
• Special thanks to: Johnny Long