Correlations between protection goals
{"Image DocumentName": "Correlations between protection goals", "Image ImageDescription": "Confidentiality. Hiding. Anonymity. Unobservability. strengthens. + weakens. \u2013 implies. Integrity. Accountability. question now: how these goals are related??? or the independent of each other? are there correlations? conflicting, supporting, exclude each other, no influence, no relation at all??? Yes \u2013 there is some correlation\u2026 not \uf0e0 you informal; no formal definition of weaken , strengthen etc. stronger \uf0e0 imply : very strong relation! [go through all arrows] example: hiding \uf0e0 confidentiality. accountability \uf0e0 integrity: it goes about  that  message! legal enforceability \uf0e0 need accountability, court need the proofs! availability with respect to message content \uf0e0 implies integrity; otherwise it is just about generating random bits\u2026 reachability \uf0e0 availability; if you want to control who can decide at which time he want to get which message. unobservability \uf0e0 hiding. unobservability \uf0e0 anonymity. now: strengthens (it supports, it helps): confidentiality \uf0df-> anonymity; Note: do not imply!!!! confidentiality: can not learn sender, recipient from content. anonymity: can not derive content from relation ship (remember example just shown\u2026) hiding \uf0e0 anonymity: by transitivity!\u2026 weakens: anonymity \uf0df\uf0e0 accountability. sometime you want both: whisle blowing; wiki leaks\u2026 security expert: find compromises \uf0e0 you learn about that in SaC II! But does not EXCLUDE each other \uf0e0 there are compromises, like pseudonymity\u2026 \uf0e0 no link to you real identity, but allows to build reputation (look at history)\u2026. if you read enough well researched articles \uf0e0 you might trust articles from that person (no gurantee!) especially digital pseudonym \uf0e0 because of digital signatures. more: fair value exchange etc. learn later about that. somehow only the main relations; not complete; depending for instance on the definitions. if no weaken \uf0e0 take ALL protection goals! Note: weaken implies conflicts!!! \uf0e0 because this implies you can NOT reach all protection goals at the same time. most prominent accountability \uf0df\uf0e0 anonymity\u2026 Note: there are many more (protection) goals!!! \uf0e0 think about that are the (security) properties of your system \uf0e0 invent new protection goals!!! Helpful for designing systems and user interfaces!!!! questions??? Reachability. Legal Enforceability. Availability.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}