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Comment: Re:What's the penalty for HTTPS? (Score 0) 95

by SamSim (#35503304) Attached to: Twitter Joins the HTTPS By Default Party

Any thoughts on HTTPS only for the login page, or for all pages?

All pages. When you log in to begin with, if the login page is HTTPS then your username and password are encrypted. This is good, because it means nobody else can snoop your password and log in as you later. You are then sent back a cookie. Later, when you want to prove that you are logged in, you just send the cookie along with the HTTP request. Of course, if all the other pages are not encrypted, then the cookie is sent in the clear, which allows anybody to collect it and use it. So, obviously, any request sending a cookie should be sent encrypted too, which means that all pages should be HTTPS.

This is an extremely obvious and trivially-fixed security vulnerability. The fact that so few sites bother to fix it is disappointing indeed.

Comment: Re:So... there is a God? (Score 2, Informative) 181

by SamSim (#34387036) Attached to: Earth's Water Didn't Come From Outer Space

A hot mantle isn't something that happens by chance. When a planet forms, it involves large chunks of *stuff* coming and binding together - that is, coming from a dispersed position of high gravitational potential to a compressed position of much lower gravitational potential. All of that GPE has to go somewhere, and most of it went into thermal energy, hence the heat at the Earth's core. Mars is much smaller than Earth = less GPE to liberate = less core heat. Of course the fact that Mars is too small to hold on to a substantial atmosphere also plays a part.

What I'm saying is that any sufficiently large rocky planet almost by definition has substantial core heat. It's not really much of a coincidence that the Earth has a hot mantle. Probably, any large rocky planet of about the same age as Earth (i.e. orbiting a population I star) has plenty of core heat left.

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