Firefox 69 is shipping with protection from cryptocurrency mining running without the user's knowledge: https://venturebeat.com/2019/04/09/firefox-will-now-let-you-block-fingerprint-tracking-and-cryptojacking/
I know CI services like Travis have to worry about this, but I wouldn't have thought JS mining would be anywhere near worthwhile.
miniblog.
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In the DOM, no one will hear you scream https://www.slideshare.net/x00mario/in-the-dom-no-one-will-hear-you-scream (argues that perfect server-side XSS protection is impossible!)
Putting my email (with reCAPTCHA protection from harvesting) online was a great decision. Interesting people sometimes reach out to me.
VP8 has patent protection from Google and MPEG-LA. Even Adobe are talking about adding it to Flash. Looks like it might win the format wars.