Simon Willison’s Weblog

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64 posts tagged “privacy”

2007

It's still a privacy concern. If, for example, I work at and post from Microsoft all day and my identicon is that of the MS Proxy Server then I would be able to identify other mefi users who are my co-workers because our identicons would match.

vacapinta

# 29th January 2007, 4:12 am / identicons, privacy

Visual Security: 9-block IP Identification. Smart (and pretty) trick for showing a representation tied to a commenter’s IP address without affecting their privacy.

# 18th January 2007, 4:55 pm / 9block, donpark, ip, privacy

2004

non-consensual http user tracking using caches. Interesting security issue involving HTTP caching headers

# 20th January 2004, 10:37 pm / caching, privacy, security

2003

Thirty five year old cookies

I’m finding myself slightly confused about the Google backlash washing around the blogosphere, which is summarised quite well by Gavin Sheridan. Most of the arguments against using Google unsurprisingly centre around privacy issues, in particular the “35 year cookie”. I was under the impression that cookies could only be set for a maximum of a year, but having checked Netscape’s Cookie Specification and RFC 2965 it appears I was mistaken.

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