BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Understanding and Fighting Malicious Activity on Online Social Net
 works - Gianluca Stringhini\, Assistant Professor\, University College Lon
 don
DTSTART:20150421T130000Z
DTEND:20150421T140000Z
UID:TALK57605@talks.cam.ac.uk
CONTACT:Laurent Simon
DESCRIPTION:*Abstract:* Online Social Networks rely heavily on networks of
  trust and on user popularity. Users believe to content that is posted by 
 people they know in real life\, or by famous people they admire and respec
 t. Cybercriminals who want to misuse social networks for their nefarious g
 oals need to gain trust from their victims as well. Miscreants can do this
  in two ways: first\, they can hijack a reputable account and use it to sp
 read malicious content. This way\, users who trust this account will be mo
 re likely to re-share this content\, or to click on the links that are pos
 ted by it. Second\, they can build a fake reputation for accounts they con
 trol\, by purchasing fake followers\, fake likes\, or fake retweets for ex
 ample. In this talk I will provide an overview of our work in detecting ma
 licious activity on online social networks. First\, I will present COMPA\,
  a system that is able to detect and block messages that have been sent by
  a social network account but that were not authored by the legitimate own
 er of the account\, but by an attacker who hijacked it. Then I will provid
 e an overview of our efforts in detecting accounts that built a fake reput
 ation on Twitter by purchasing followers. I will then discuss some open re
 search areas in the field of fighting cybercriminal activity on social net
 works.\n\n*Bio:* Dr Gianluca Stringhini is a lecturer in the Departments o
 f Computer Science and Security and Crime Science at UCL. His research int
 erests include network security\, cybercrime measurement\, social network 
 security\, and malware analysis. His work was awarded a Best Paper Award a
 t ACSAC in 2010 and the Outstanding Dissertation Award from the Department
  of Computer Science at UC Santa Barbara in 2014. He was one of the recipi
 ents of the Symantec Research Labs Graduate Fellowship in 2012.
LOCATION:LT2\, Computer Laboratory\, William Gates Building
END:VEVENT
END:VCALENDAR