[HN Gopher] Upside-Down-Ternet (2007) ___________________________________________________________________ Upside-Down-Ternet (2007) Author : geocrasher Score : 23 points Date : 2022-05-10 20:35 UTC (2 hours ago) (HTM) web link (www.ex-parrot.com) (TXT) w3m dump (www.ex-parrot.com) | AdamJacobMuller wrote: | SSL ruined this. | | I did this for fun a while back in our office. | | We had some people who would burn too much time on social media, | so, they got added to a special rule on the `pf` firewall | surrounding the office which blurred all images from selected | sites, like facebook. I blurred instead of something more obvious | like blocking or inverting the images since it was designed to | counter casual use and was more amusing. Anybody who couldn't | evade my trivial firewall block shouldn't have been working | there. | | I remember watching logs and I would progressively ratchet up the | blur level if it wasn't effective enough. | | I terminated the experiment when an employee casually told me he | had an appointment at the eye doctor because it was getting hard | to see his computer screen, it would never get any better than | this. | Alan_Dillman wrote: | I remember when this was knew, thinking, "Its so cool, but too | technical for me to do!" Now it would be, "meh, I've done | harder". | | Thanks for the wonderful memories. | glitchcrab wrote: | My manager at my last job actually did this to one of his good | friends many years ago after I showed this article to him - | whenever the friend was using my manager's WiFi any images would | be upside down, or blurred etc etc. He took great delight in | telling me that the friend had even reinstalled his OS to try and | solve it. | | A couple of years later, said friend actually joined the company. | I used to take great delight in dropping occasional obscure hints | and comments, but he never did figure it out. | gwern wrote: | Cute, but would presumably be a lot less effective these days | between HTTPS, JS dynamic loading of everything, and VPNs? | JonathonW wrote: | The transparent proxy wouldn't care whether images are being | dynamically loaded or not; it'll flip any image it sees (as | long as it's a GIF or JPEG, in this example). | | But HTTPS breaks it completely; that's kind of the point (can't | MITM a TLS connection on a computer you don't control without | certificate errors popping up). ___________________________________________________________________ (page generated 2022-05-10 23:00 UTC)