Skype’s principal architect explains why they no longer have end-to-end crypto
Mobile devices can’t handle the CPU and constantly-online requirements, and an increased reliance on dedicated routing supernodes to avoid Windows-client monoculture and p2p network fragility (via the IP list, via kragen)
(tags: skype p2p mobile architecture networking internet snooping crypto via:ip via:kragen phones windows)
Accuweather long-range forecast accuracy questionable
“questionable” is putting it mildly:
Now to to the point: Are the 25-day forecasts any good? In a word, no. Specifically, after running this data, I would not trust a forecast high temperature more than a week out. I’d rather look at the normal (historical average) temperature for that day than the forecast. Similarly, I would not even look at a precipitation forecast more than 6 days in advance, and I wouldn’t start to trust it for anything important until about 3 days ahead of time.
(tags: accuweather accuracy fail graphs data weather forecasting philadelphia)
Setting up Perfect Forward Secrecy for nginx or stud
Matt Sergeant writes up a pretty solid HOWTO:
There has been a lot of discussion recently about Perfect Forward Secrecy (PFS) and the benefits it can bring you, especially in terms of any kind of traffic sniffing attack. Unfortunately setting this up I found very few guides telling you exactly what you need to do. The downside to PFS [via ECDHE] is that it uses more CPU power than other ciphers. This is a trade-off between security and cost.
(tags: ecdhe elliptic-curve crypto pfs ssl tls howto nginx stud)