BC INTERNET

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Dave Anderson
@dave_universetf 5 years, 5 months ago 557 views

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Hooray, my IPv6 parser is mostly working, and only missing the final cursed case.

It's done. By god, it's done.

I mean, parseIPv6 is also awful and embarassing and much worse than the stdlib implementation right now. But is it at least faster than the stdlib?

Ope never mind, other tests are failing still. Bah.

lol, fuck. Not only is it 50% slower than the stdlib's parser, it's also not alloc-free.

oh, it's because it's benchmarking parsing a zone, and we have to intern the zone... I think.

Yess. For IPs without a zone, my parser is faster and alloc-free. Not hugely faster mind you.

I guess if you squint, it's about as good as the IPv4 parser. It has to touch 4x more bytes, so just under 4x slower isn't that bad.

That said, I'm pretty sure my code is a branch predictor's nightmare right now, not to mention it's entirely unreadable even by my low standards. Needs another round of improving, now that it passes tests.

I think it's time to checkpoint and play Elite Dangerous tonight, but the plan for tomorrow is to see if I can't turn this into a more explicit state machine, so that the code is considering fewer possibilities at any one time.

In general, I think all IPv6s parse in 4 stages:
- Hex before ellipsis
- Hex after ellipsis
- Embedded IPv4
- Zone suffix

All but the first are optional, and the conditionals to decide which new state to transition to is a bit ugly...

... But I think within each state the "happy loop" condition is simple and should keep the CPU and branch predictors pretty happy.

Current WIP, as I pack in for tonight to go play Elite: https://t.co/acwEFavxQi

WARNING: side-effects may include eye bleeding and stomach ulcers.

It also still has a bunch of debugging code in it, the comments may not match the code any more, and I haven't yet iterated on the benchmarks and SSA to see what hand-inlining was actually productive vs. harmful. So it's all hand-inlined, in the worst possible way.

The code's definitely not getting submitted like this, but that's my hacking process I guess :)

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$Markus Amalthea Magnuson \u2744\ufe0f$

Markus Amalthea Magnus...
@scifiagenda

I did more research into the Parler dump. What probably happened was not so much a "hack", but this: When Twilio/Okta shut them down, they just disabled email/phone verification to create an account. This means anyone could directly create huge amounts of accounts via their API.

Someone also found out that fetching Parler posts could be done by enumerating IDs (e.g 1, 2, 3) instead of random IDs that can't be guessed. Unclear if this was via the ordinary API endpoint, or that they found a separate one by monitoring app network traffic.

So you combine these two things and you can create a script to scrape all the posts on the entire platform, using a lot of different accounts to avoid suspicion. Anyone could download and run this script to spread it out over many IP addresses as well.

What I'm still not sure about is whether deleted (meaning flagged as deleted, it's common that services never actually delete data) posts could be fetched without any special handling.

The verdict: The people who wrote Parler are fucking amateurs.

Nathaniel Ho-Ho-Horada...
@NW_Horadam

If you're looking at GA EV data and thinking maybe the reason D turnout looks strong relative to 11/3 is because after 2 months of Trump/GOP officials trashing mail-in ballots GOP voters are ditching it for E-Day instead...

Boy do I have some mindblowing statistics for you...

I compared the current mail-in voting tallies for each Congressional District against November mail-in votes for those districts.

The statewide figure currently sits at 62%. Guess which district leads the state?

You guessed it!

GA-14 at 69%. Marjorie Taylor Greene's district.

#2 is GA-8 at 68%.

Jody Hice of "I'm joining Marjorie Taylor Greene in her effort to throw out the Electoral College vote" fame.

GA-9 (Doug Collins) is above the state average at 64%.

IF Republicans were ditching absentee balloting en masse to vote on Election Day, you'd expect to see it by now. But the early *in-person* voting totals are what's actually lagging, not mail-in voting.

Pardon the sloppy spreadsheet, but those last 4 columns are what I'm looking at. The last one in particular.

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$Elaine Hayes MCCT #MIEExpert \u2618$

Elaine Hayes MCCT #MIE...
@e_hayes12

A thread on teaching live lessons using @MicrosoftTeams Meet Now function where students follow their normal timetable except online - will go into more detail on every point in a blog post later. Have used Teams for live teaching have supported over 100 live lessons since March

1. If you are using the desktop app, check you have the latest version of Teams so that you should have Breakout rooms enabled. Check by clicking your profile picture, then About - I have version 1.3.00.28779. If you have 1.2..., click on check for updates to get the latest

2. Set your entry routine. I get my students to enter with their microphone muted - you can also not allow attendees to unmute by opening the participants list, clicking the ellipsis and selecting that option.

3. Make sure students arrive as attendees - some organisations have this set up to automatically happen that only meeting organizer is the presenter and others are attendees. Can change this in the manage permissions menu to only me if not already set (opens in a web browser).

4. Classroom routine and expectations - first lesson I share my screen and show the students the raise hand function for when they want to ask questions, how to access the chat function and how to react to questions as opposed to typing answers

Gwen Snyder is uncivil
@gwensnyderPHL

With Parler down, there are going to be a ton of white supremacists switching to (or back to) @Telegram, a company that has sheltered some of the worst, most explicitly pro-terror Nazi groups for years now.

RT to tell @apple & @google to KICK TELEGRAM OFF their app stores, too.

Or, Telegram can actually enforce its terms of service.

But I am watching tons of Nazis thrill to the idea of mass murder on there.

They're emboldened, and @Telegram gives them a place to recruit, radicalize, and plan to kill people.

Parler was bad, but Telegram is the absolute wild west.

I've watched actual terror plots unfold there.

It's where they share printable gun plans and bomb how-tos.

It's where they discuss targets and share vicious, gory murder videos of minorities they don't like.

And I would also add, deplatforming the less dark-webby extremism platforms like Parler ALWAYS means a temporary influx to these more extremist, darker-webby platforms.

We saw it after 8chan, too.

It was necessary, it immediately and overwhelmingly cut down on successful deadly terror, but in the very short term I watched numbers swell in overtly terror Nazi channels as more radicalized/edgelors 8chan folks sought a new home.

Giovanni Pagano
@giovanni_pag

What are the implications of using hacked data for research?

A short thread inspired by the fact that, before AWs took it down, #Parler was extensively hacked and user data was leaked.

The #Parler dataset seems crazy interesting for doing research, and my first reaction after the breach was to shre it with other #CompSocSci ppl.

However, I started having second thoughts, so what follows is to organize ideas and have it somewhere I can look back to.

2/n

Generally speaking, as far as the ethics of research goes a good advice would be to handle hacked data with caution.

First of all, there's an issue of quality. Data might be altered or incomplete, and the source cannot be considered accountable (assuming src is anonymous).

3/n

Secondly and more importantly, a researcher using the data would probably be violating users’ consent and acting against the data collector's will.

Finally, users’ privacy is at stake, since researchers could see material that users didn’t agree for other people to see.

4/n

Sharing private information without consent might put people at risk of harm.

This is all the more true in cases such as the #ParlerHack, where the leaked information is of particularly sensitive nature, and there’s a high risk of unintended consequences.

5/n

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5. 50 ema can also act as support which can be kept as stoploss for swing trading
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