Wednesday, August 15
- For Intel, it's a new day so there's a new speculative execution vulnerability. This one is called Foreshadow by researchers and L1TF by Intel - Level 1 Terminal Fault because it relates to the level 1 cache permission checking termination logic. (Ars Technica)
Fortunately I didn't get around to migrating to Digital Ocean just yet. We run VMs for mee.nu - half a dozen of them with more on the way - but on dedicated rather than shared hardware, so this exploit mostly doesn't apply. (Digital Ocean)
An interesting point is that Intel has already provided a patch that largely resolves the problem, unless you are running hyperthreading. I'm not sure about other cloud providers, but my understanding is that Amazon run customer-specific CPUs with hyperthreading disabled, and have done for years. As core counts increase we may start seeing a trend towards disabling hyperthreading by default - as seen in the upcoming eight core i7 chips. (Or so rumour has it.)
- Google still tracks your location when you turn off location tracking. Because "don't be evil" got too complicated. (Fudzilla)
- NVIDIA's new high-end graphics cards are using Samsung's new 16Gb GDDR6 memory. This is another thing that will trickle down to consumer parts fairly quickly. It's 40% faster than the fastest commonly-used GDDR5 memory (14Gbps vs. 10Gbps).
- Faxes are now haxes. Network-attached multi-function printers too. (The Register)
If you have an HP multi-function printer on your network, the time to update the firmware is right now. Some of the more recent models apparently update themselves automatically, but it's definitely something to check. You may have a wonderful high-tech firewall that blocks every single thing, but hackers can just dial straight in to your fax machine.
This sort of thing has been going on for some time, really. There was a story years ago about a company that kept having outbreaks of computer viruses even after patching every single PC and server on the network.
Turned out the source of the infection was a colour laser printer, which had an internal hard drive for storing fonts and print jobs.... And viruses.
- PCWorld tested the Threadripper 2990WX just like everyone else (not me) and found something interesting. Though it trails behind the fastest Intel chips on some tests (because of memory latency, OS scheduling, or something else) that's when you are testing one application at a time.
They tried running Blender and Cinebench at the same time - and it ran Cinebench as fast as the 18 core Intel i9-7980X running Cinebench alone. (PCWorld)
Social Media News
- Twitter have apparently Level Two Restricted Alex Jones' account. Not suspended, but restricted, so his account is still active and his tweets are still up, he just can't tweet any more for a few days. (CNet)
I have had two Level 2 restrictions and seventy-one Level One restrictions so far this year. The most recent was this:
Alex Jones is like tiny baby.
- TechDirt has some nice You CAN yell FIRE! in a crowded theatre t-shirts.
- TwitterSafety says: The beatings will continue until morale improves.
This week, we are suspending accounts for attempting to evade an account suspension. These accounts were previously suspended for abusive behavior or evading a previous suspension, and are not allowed to continue using Twitter.â€” Twitter Safety (@TwitterSafety) August 14, 2018
Video of the Day
Cat Video of the Day
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Cat Picture of the Day
Also, did you see the unsettling power usage charts someone had (I think it was Anandtech, but it might've been someone else?) The uncore/Infinity Fabric that handles moving data between cores turns out to take up a huge amount of a chip's power as you get more cores. IIRC the 2990WX, with all threads loaded, splits power distribution about 50/50 between the cores and the rest of the chip. Intel's HEDTs, like the 7980X, are nearly as bad--with all 36 threads loaded it's like 40% of the power going to the uncore/mesh bus.
Posted by: Rick C at Wednesday, August 15 2018 11:42 PM (Q/JG2)
Posted by: Rick C at Wednesday, August 15 2018 11:44 PM (Q/JG2)
Posted by: Pixy Misa at Thursday, August 16 2018 01:03 AM (PiXy!)
Posted by: Rick C at Thursday, August 16 2018 01:32 AM (Q/JG2)
Posted by: Rick C at Thursday, August 16 2018 04:48 AM (Q/JG2)
Posted by: Pixy Misa at Thursday, August 16 2018 09:48 AM (PiXy!)
Posted by: Pixy Misa at Thursday, August 16 2018 09:50 AM (PiXy!)
Posted by: Mauser at Thursday, August 16 2018 10:35 AM (Ix1l6)
I think having some round elements really helps make the page look more attractive, but maybe I'll make them squircles and calculate the border radius based on the the phase of the Moon...
Posted by: Pixy Misa at Thursday, August 16 2018 11:36 AM (PiXy!)
Posted by: Rick C at Thursday, August 16 2018 01:24 PM (ITnFO)
Posted by: David at Friday, August 17 2018 06:57 AM (A/T0R)
Posted by: J Greely at Friday, August 17 2018 08:45 AM (LGSd2)
Posted by: Pixy Misa at Friday, August 17 2018 09:51 AM (PiXy!)
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