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Digital security for Sri Lankan activists


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Digital security for Sri Lankan activists

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Digital security for Sri Lankan activists

  1. 1. Primer: Digital security for SriLankan activistsSanjana HattotuwaTED FellowArchitect and Curator, Groundviews
  2. 2. State of play?
  3. 3. There is no absolute security
  4. 4. Security is a shared responsibility
  5. 5. Security is only asgood as weakest link
  6. 6. How the Internet works
  7. 7. Layers of the internet
  8. 8. Compromise on every level Spyware, malware, keyloggers Man in the middle attacks ISPs, GSM location info
  9. 9. Passwords
  10. 10. Creating a strong password• I was born on 9th April 1977 in Colombo• Iwbo9A1977iC• Why are you sad today?• WrU:-(2d?• My advice – at least 10 alpha-numeric and ASCII characters• If on public PC, try to copy and paste passwords online. NEVER type them in.
  11. 11. Remembering passwords
  12. 12. Posting content online
  13. 13. Common-sense posting• Know the laws in your country pertaining to liability, libel etc.• When signing up for a blog account where you will be publishing sensitive content, do not use you personal email address or information• In your blog posts and profile page, do not post pictures of yourself or friends• Do not use your real name and do not give personal details• Schedule posts: Blog platforms like Wordpress allow uses to automatically publish a post on a designated date and time.
  14. 14. Common-sense posting• On social networks, create one account for activism under a false but real-sounding name (so your account won’t be deleted) but don’t tell your friends about it.• Information on Facebook, stays on Facebook. Be careful what you upload and say.• Never join a sensitive group with your real account. Use your fake account to join activism groups.• Don’t use paid services. Your credit card can be linked back to you.
  15. 15. Choosing a web browser
  16. 16. Internet Explorer 9
  17. 17. Firefox 16
  18. 18. Firefox Mobile
  19. 19. Google Chrome
  20. 20. Google Chrome Mobile
  21. 21. Browsing without trails
  22. 22. Private browsing in IE
  23. 23. Private browsing in Firefox
  24. 24. Incognito browsing in Chrome
  25. 25. EFF’s HTTPS Everywhere
  26. 26. DNSCrypt
  27. 27. Email
  28. 28. Safe & best email practices• Use a signature• If email security is REALLY a need, go for GPG encrypted emails• Stick to plain text / Do not use fancy email templates• Do not click on unknown attachments (esp. from unknown senders)
  29. 29. •• Spam and phishing protection• Built for Gmail and easy to set up• Thunderbird warns you when you click on a link which appears to be taking you to a different Web site than the one indicated by the URL in the message.
  30. 30. GPG for Mac / OS X
  31. 31. GPG for Windows
  32. 32. Online, quick encryption
  33. 33. Safe & best email practices• Use phonetics to convey meaning: “Ooman writes” “whoman rites” “see I d” “ma hinder” “go tub a yaar”• Use words instead of human rights – say food, heat or supplies. E.g. “the heat is bad”, “the food is poor”, “supplies are bleak”.• Use BCC for group emails• Never use the same email for advocacy, professional emails, personal correspondence• Subject lines are NEVER encrypted• Caution and prevention more than remedy
  34. 34. 2 step authentication for Gmail hl=en&topic=14118&parent=TopLevel&ctx=topic
  35. 35. Securely chatting
  36. 36. Skype chat [Compromised?]
  37. 37. Pidgin
  38. 38. Off The Record (OTR)
  39. 39. Off The Record (OTR)
  40. 40. Getting to blocked pages
  41. 41. TOR
  42. 42. Google Good to Know
  43. 43. Google Good to Know
  44. 44. Google Good to Know
  45. 45. Mobile phone security
  46. 46. What do you have on your mobile?• Contact names• Phone numbers• Emails• SMS history• Call logs• Photos• Video• Audio• Calendar information• Maybe even files• In short, not too different from data on your PC, and perhaps even more sensitive
  47. 47. Basic guidelines• Security on mobiles is still not as advanced as computers• Be mindful of data stored on mobile• Is it secured via a password?• Are there messages, call logs, emails or other data that can compromise security for self, colleagues and partners?• Invest in smartphone that can run Skype mobile for secure conversations• Do NOT share confidential information over SMS
  48. 48. Surveillance• For every phone currently on the network (receiving a signal, regardless of whether the phone has been used to call or send messages) the network operator has the following information: – The IMEI number – a number that uniquely identifies the phone hardware – The IMSI number – a number that uniquely identifies the SIM card – The TMSI number, a temporary number that is re-assigned regularly according to location or coverage changes but can be tracked by commercially available eavesdropping systems – The network cell in which the phone is currently located. Cells can cover any area from a few meters to several kilometers, with much smaller cells in urban areas and even small cells in buildings that use a repeater aerial to improve signal indoors. – The location of the subscriber within that cell, determined by triangulating the signal from nearby masts. Again, location accuracy depends on the size of the cell - the more masts in the area, the more accurate the positioning.
  49. 49. Mobile phone security primer
  50. 50. Security in a box
  51. 51. Thank