Privacy

Data is the new oil

• Very useful
• But very dangerous

Issues around data collection

• Data linking - correlating data sets
• (De)anonymisation
• Massive Scale
• Data breach
• Fishing expeditions -> Using data out of collected purpose

Tools aren’t built for users

Tools are often built for government agencies to easily retrieve your data.

Who has your data?

Everyone tbh.

• Facebook
• Google
• Apple
• …

What data?

Location history, calls, emails, files, age, etcetera

Who uses your data

• Private Companies
  
• Government
  
• Intelligence Communities

Data Lakes

Pooling ‘streams’ of data into one big ‘lake’.

Think twice

• It’s end to end encrypted
  • Malicious public/private keys might be added
• Algorithms not people
  • People
• Only does X under Y conditions
  • Bugs.
• It’s locked down - only accessible by X
  • Rogue sysadmins (of data centers)
  • ie Snowden
• Thorough auditing
  • Oh.. do you now…
• Secure
• Anonymised

Anonymisation Techniques

• Redacting
• Encrypting / Hashing
• Pseudonyms
• Binning (generalising the coverage)
• Statistical noise
• Aggregation