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Reposted Jerry Lerman (@Jerry@hear-me.social)
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Attached: 1 image Important reminder, if you own a domain name and don't use it for sending email. There is nothing to stop scammers from sending email claiming to be coming from your domain. And the older it gets, the more valuable it is for spoofing. It could eventually damage your domain's reputation and maybe get it blacklisted, unless you take the steps to notify email servers that any email received claiming to come from your domain should be trashed. Just add these two TXT records to the DNS for your domain: TXT v=spf1 -all TXT v=DMARC1; p=reject; The first says there is not a single SMTP server on earth authorized to send email on behalf of your domain. The second says that any email that says otherwise should be trashed. If you do use your domain for sending email, be sure to add 3 records: SPF record to indicate which SMTP server(s) are allowed to send your email. DKIM records to add a digital signature to emails, allowing the receiving server to verify the sender and ensure message integrity. DMARC record that tells the receiving email server how to handle email that fails either check. You cannot stop scammers from sending email claiming to be from your domain, any more than you can prevent people from using your home address as a return address on a mailed letter. But, you can protect both your domain and intended scam victims by adding appropriate DNS records. UPDATE: The spf and the dmarc records need to be appropriately named. The spf record should be named "@", and the dmarc record name should be "_dmarc". Here's what I have for one domain. One difference that I have is that I'm requesting that email providers email me a weekly aggregated report when they encounter a spoof. gmail and Microsoft send them, but most providers won't, but since most email goes to Gmail, it's enlightening when they come. #cybersecurity #email #DomainSpoofing #EmailSecurity #phishing

by Jamie Tanna's profile image Jamie Tanna . #self-hosting #email.

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Liked ThatSexToyGuy (@hungry_joe@mas.to)
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True story: my mum worked for the MoD. She was in the kitchen at Sandhurst once and Prince Andrew walked in. Everyone was surprised, no one reacted. He said. 'hm, let's try that again shall we?', then he left the kitchen and walked back in, just to make them all bow properly. Prick.

by Jamie Tanna's profile image Jamie Tanna .

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Reposted Benjamin Carr, Ph.D. 👨🏻‍💻🧬 (@BenjaminHCCarr@hachyderm.io)
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Every time you use #ChatGPT, half a litre of #water goes to waste #GenerativeAI already uses as much energy as a small country and is predicted to rival that of Japan within a year. Such searches use 10 times the energy of a normal web search. “We’re wasting a lot of water with these systems, and very few people realise that it’s a major problem. That’s why I think personally the No.1 priority for the sector should be #sustainability. Not the #AI race.” https://www.smh.com.au/technology/every-time-you-use-chatgpt-half-a-cup-of-water-goes-to-waste-20241128-p5kubq.html

by Jamie Tanna's profile image Jamie Tanna . #ai #ethics #llm #climate-change.

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Liked Clayton (@craftyguy@freeradical.zone)
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Today was "upgrade my personal fleet of Alpine Linux systems to the latest (3.21) release" day 🥳 I upgraded 5 systems in about 30min! It was boring! 🎉 Upgrading to newer releases was always an annoying experience for me on other distros, but the #alpinelinux folks have done an incredible job making this Just Work twice per year, every year. I have a few silly system configs that always seem to survive release upgrades without needing changes, it's really amazing. @alpinelinux@fosstodon.org crushed it!

by Jamie Tanna's profile image Jamie Tanna .

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Reposted Josh Simmons (@josh@josh.tel)
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I am deeply alarmed for the trans and gender expansive community in the UK. What the fuck: https://www.lgbtqnation.com/2024/12/united-kingdom-bans-puberty-blockers-indefinitely-its-a-death-sentence/ (Yes also alarmed about what's happening in the US, esp in Florida right now, and what the next four years may bring.) #UKPol #USPol #Trans #LGBTQ

by Jamie Tanna's profile image Jamie Tanna .

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Liked Steve Bellovin (@SteveBellovin@infosec.exchange)
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Exploiting mansplaining as tradecraft during WW II: “If she wants to know something specific, but doesn’t want people to notice her asking questions, she should simply make incorrect statements while in the company of experts. Her companions will correct her, especially if they're men.” From Elyse Graham's “Book and Dagger”, describing a training school for the SOE.

by Jamie Tanna's profile image Jamie Tanna .

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Liked Legit_Spaghetti (@Legit_Spaghetti@mastodo.neoliber.al)
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Attached: 1 image As far as manifestos go, this is pretty short and concise. I think killing people is wrong, especially if it's premeditated, carefully planned, and carried out with cold detachment. There are no heroes in this story as far as I'm concerned; just one killer encountering a killer of a different stripe. Still, news organizations suppressing this manifesto is a dereliction of duty. So, here you go.

by Jamie Tanna's profile image Jamie Tanna .

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Reposted Andy in Indy (@naptowncode@mastodon.online)
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If you have to stream it, you don’t own it. If you have to log in to it, you don’t own it. If you have to “activate” or “register” it, you don’t own it. If you have to connect it to somebody else’s computer EVER, for ANY REASON, then YOU. DON’T. OWN. IT. Any and all of these methods will be used against you for somebody else’s profit. If you yell about personal property rights but you don’t sign on to these statements, you are not serious about property rights. https://arstechnica.com/gadgets/2024/12/startup-will-brick-800-emotional-support-robot-for-kids-without-refunds/

by Jamie Tanna's profile image Jamie Tanna .