c7five
Nick Percoco

https://www.linkedin.com/in/c7five

Hacker. 🔒🍣🍹

- CSO at Kraken
- NOC Goon at DEF CON
- Lead OPER at THOTCON
- Startup Investor / Advisor

Public Key

npub1xmp08ww7fku05qwhy3ldgshevq368qjzas628ukpqs4wunuec0gqwgqfpf

NIP-05 Address

Profile Code

nprofile1qqsrdshnh80ymw86q8tjglk5gtukqgarsfpwcd9r7tqsg2hwf7vu85qpr9mhxue69uhhqatjv9mxjerp9ehx7um5wghxcctwvsq3uamnwvaz7tmjv4kxz7fwvde8jur5da3kxatvw36hyefwvdhk6zg6dhn

Publishing to

puravida.nostr.land

relay.cryptocculture.com

Author Public Key

npub1xmp08ww7fku05qwhy3ldgshevq368qjzas628ukpqs4wunuec0gqwgqfpf

Show more details

Last Notes

2025-09-02 13:22:08 UTC

New: Kraken is the number 1 exchange on the Q3 2025 Kaiko Spot Exchange Ranking and ONLY exchange with a Security score of 100.
https://www.kaiko.com/indices/exchange-ranking

2025-08-19 23:25:24 UTC

Hello?

2025-02-15 02:19:06 UTC

Decided to get into #bitcoin solo mining with a Braiins BMM 101. It’s of course not profitable unless it finds a block, but still a fun device to have on my desk with a built in “lottery ticket” every 10 minutes.
https://m.primal.net/OxAr.jpg

2025-01-04 14:30:05 UTC

GM!

2025-01-01 18:58:15 UTC

New Years ribs on the smoker. #foodstr
https://m.primal.net/NOAR.jpg

2024-12-25 12:55:40 UTC

Merry Christmas! 🎄🎅🏼🤶🏼

2024-12-24 17:13:09 UTC

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🎅🏼

2024-12-24 16:24:09 UTC

Kitboga and I get a scammer to lose his mind over 70 BTC
https://youtu.be/Fq09bCSlnyE

2024-12-24 15:58:11 UTC

What are you cooking for Xmas this year? #foodstr

2024-11-28 16:59:21 UTC

Raviolis & smoked turkey for #thanksgiving #foodstr
https://m.primal.net/Mjbm.jpg
https://m.primal.net/Mjbn.jpg

2024-11-18 17:47:18 UTC

The best was to get me to ignore your message is to ask me to connect with you on Telegram.

2024-09-07 13:35:02 UTC

13 hours in for the brisket. About 5 more until it reaches temp.
#foodstr
https://m.primal.net/KiEQ.jpg

2024-09-07 11:48:35 UTC

#iykyk #foodstr
https://m.primal.net/Khyy.jpg

2024-09-06 12:03:22 UTC

Kraken Labs is a suite of interactive, data visualization modules that leverage both Kraken-derived and onchain data. This includes everything from highly exploratory and abstract 3D real-time data visualizations to insight-driven experiments that use time-series clustering and pattern recognition.
https://labs.kraken.com
https://m.primal.net/Kgjy.jpg

2024-09-06 11:56:25 UTC

Preparing a 17 lb American Wagyu brisket for dinner tomorrow night. It will be smoked at 225 - going for the no-wrap method which means it will take about 20 hours until done. Will post a few steps along the way. #foodstr
https://m.primal.net/KgjX.jpg

2024-09-03 01:18:09 UTC

Just played around with @npub1agh…mhct and @npub1wr5…jeva. Took less than 5 minutes to build a free personal VPN service you can use while traveling and route all of your internet traffic via your home network.
The public documentation is rather verbose and inclusive. So if you already have Tailscale working to access your Umbrel remotely all you need to do is:
1. Open an Umbrel terminal for app Tailscale and enter:
tailscale set --advertise-exit-node --exit-node-allow-lan-access
2. Connect to login.tailscale.com from your personal device and “edit route setting” for your Umbrel, enable “use as exit node” and save.
That’s it! Next time you connect your Tailscale client from anywhere in the world, you will be able to select your Umbrel as your exit node and access the internet just as if you were sitting on your home network.
https://m.primal.net/KbTw.jpg
https://m.primal.net/KbTx.jpg
https://m.primal.net/KbTy.jpg

2024-09-02 23:44:01 UTC

Running a #nostr relay on my #umbrel to backup my activity.
Are there any well written guides on running your own public relay?
https://m.primal.net/KbOI.jpg

2024-09-01 18:24:32 UTC

“People shouldn't be afraid of their government. Governments should be afraid of their people.” - V for Vendetta
https://m.primal.net/KZHs.jpg

2024-08-31 23:46:22 UTC

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The #nostr private key topic is one I’ve been thinking about lately. If you have a private key compromise there is no recovery from that. You could have an account that has 1 million followers and there is no way to get back complete control as far as I know.
We know account compromises happen to celebrities on X all the time.
You need to protect your #nostr private key as well as you do your other social credentials. This probably means a password manager or keeping it offline.
The problem we are faced with is that there isn’t any sort of multi factor authentication with your #nostr private key. An attacker could easily phish someone into entering their private key into a form or UI they control and it will be game over for that user.

2024-08-31 21:47:53 UTC

Perhaps a new #introduction is needed. I’m Nick Percoco. I’m the Chief Security Officer at Kraken. I’m responsible for all things security, IT, fraud and client support. I’ve been working in the crypto industry for 6 years and have 27 years of experience overall. What would you like to hear from me about on #nostr?

2024-08-31 21:43:19 UTC

Just tapped a keg of Cigar City Brewing’s Jai Alai.
https://m.primal.net/KXqK.jpg

2024-08-31 15:06:08 UTC

Are folks from Brazil here?

2024-08-30 23:28:05 UTC

Checking out Primal. Seems like a really solid nostr client.

2024-03-03 20:48:39 UTC

In Spring of 1995, I was a Linux user. I had been since late 1993 running Slackware. This was being done on a 386SX processor with 2MB of RAM and 20MB hard disk.
There started to be some chatter on USENET about Windows 95 coming out and how it was going to be amazing.
I wanted to see if I could get my hands on a leaked copy somehow. In 1995, the best place to find this was #warez on IRC. So I jumped into that channel and found a DCC bot offering up a beta version of Windows 95.
After going back to my dorm and installing it, since this was a beta version there wasn’t any network card drivers nor a TCP/IP stack. I had to get the DOS driver (3c509) and then the Windows 3.1 TCP/IP stack which was Trumpet Winsock to be able to DHCP an address from my dorm’s network and connect to the Internet with terminal tools like FTP and NCSA Telnet.
A graphical web browser didn’t come as part Windows 95. Internet Explorer didn’t come until the Windows 95 Plus pack was released later.
There were basically two main choices of web browsers at the time: NCSA Mosaic and Netscape Navigator, so I installed both.
I had been using NCSA Mosaic since fall of 1993 and was a fan - having developed a lot of websites for my university and also businesses in Chicago starting around 1994.
Netscape was innovating more than Mosaic and it eventually became my browser of choice for many years.
I remember being especially excited when Netscape added SSL support - prior to this most of what you did online was sent in clear text. SSL would enable web forms to take private information like credit cards with less risk to compromise at the network layer.
I didn’t have a credit card in 1995, so I went down to the quad at Illinois State University and found a table with some kids giving free beer koosies if you signed up for a credit card.
It took a few weeks to arrive but received credit card with a $500 limit - with something like a 27% interest rate.
My first online purchase over SSL was on the Netscape website store for a t-shirt. It was a white t-shirt with a small Netscape logo in the upper left front chest and had the dragon named Mozilla on the back. It got lost in some move or closet purge - I wish I still had it. To me that transaction a monumental one in my life / career. It showed me a glimpse of what the future would be like. I spent the 2000s writing standards and building technology that further secure credit card use for the entire planet.
Connecting and building the Internet in mid-90s took a lot of motivation and time. Most parts of the experience just work today and we (including me) never thinks about it when doing everyday tasks. Those same parts would sometimes take several minutes or hours to setup just before you could begin to use them.
If you were a hacker with both patience and endless curiosity the 90s was a technical wonderland where you could discover and use technology that almost no one else on the planet was using, but someday would.

2024-02-20 19:14:41 UTC

https://blog.kraken.com/crypto-education/passkeys-multiple-2fa

2023-11-10 10:48:06 UTC

. . : : The Hacker's Manifesto : : . .
Another one got caught today, it's all over the papers. "Teenager arrested in computer crime scandal", "Hacker arrested after bank tampering"...
Damn Kids. They're all alike.
But did you, in your three-piece psychology and 1950's technobrain ever take a look behind the eyes of a hacker? Did you ever wonder what made him tick, what forces shaped him, what may have molded him?
I am a hacker, enter my world...
Mine is a world that begins with school. I've listened to the teacher explain for the fifteenth time how to reduce a fraction. I understand it. "No, Mrs. Smith, I didn't show my work. I did it in my head..."
Damn kid. Probably copied it. They're all alike.
I made a discovery today. I found a computer. Wait a second, this is cool. It does what I want it to do. If it makes a mistake, it's because I screwed up. Not because it doesn't like me...
or feels threatened by me...
or thinks I'm a smart ass...
or doesn't like teaching and shouldn't be here...
Damn kid. All he does is play games. They're all alike.
And then it happened... A door opened to a world... Rushing through the phone line like heroin through an addict's veins, an electronic pulse is sent out, a refuge from the day to day incompetencies is sought... A board is found.
"This is it... This is where I belong..."
I know everyone here... Even if I've never met them, never talked to them, may never hear from them again... I know you all...
Damn kid. Tying up the phone line again. They're all alike...
You bet your ass we're all alike... We've been spoon fed baby food at school when we hungered for steak... The bits of meat that you did let slip through were pre-chewed and tasteless. We've been dominated by sadists, or ignored by the apathetic. The few that had something to
teach found us willing pupils, but those few are like drops of water in the desert.
This is our world now... The world of the electron and the switch, the beauty of the baud. We make use of a service already existing without paying for what could be dirt cheap if it wasn't run by profiteering gluttons, and you call us criminals. We explore... And you call us criminals. We exist without skin color, without nationality, without religious bias... And you call us criminals. You build atomic bombs, you wage wars, you murder, you cheat, and lie to us and try to make us
believe it's for our own good, yet we're the criminals.
Yes, I am a criminal. My crime is that of curiosity. My crime is that of judging people by what they say and think, not what they look like. My crime is that of outsmarting you, something that you will never forgive me for.
I am a hacker, and this is my manifesto. You may stop this individual, but you can't stop us all...
After all, We're all alike.
+++The Mentor+++

2023-11-07 16:13:30 UTC

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It’s good!

2023-11-07 16:03:48 UTC

Security above everything: why every month is Cybersecurity Awareness Month at Kraken
https://blog.kraken.com/product/security/security-above-everything-why-every-month-is-cybersecurity-awareness-month-at-kraken https://image.nostr.build/6e42ebd3e2e9e5f90ba6914f583ac7ad055534e82aba1924615717d8b62bdc53.jpg

2023-11-05 19:52:09 UTC

Hello

2023-05-14 19:55:23 UTC

#[0] What do you know?

2023-05-14 18:38:24 UTC

We will be accepting #bitcoin #lightning payments at #THOTCON this year using #[4] PoS. https://nostr.build/i/0defc9828d531c1ce10e7b9ef70037f6f750e02cb8b03032253d1b440e0adbc9.jpg

2023-04-08 21:37:38 UTC

Shave and a haircut.

2023-04-01 12:42:51 UTC

GM! Remember what today is. Believe even less of what you read today.

2023-03-31 17:40:25 UTC

The #Bitcoin white paper is on the Williams F1 car in Australia this weekend.
https://nostr.build/i/nostr.build_3a4059596347a2b6d32db9c3e95678b6f03783e95753b1bac5a85f27c6ca811d.jpg

2023-03-31 11:41:46 UTC

GM!

2023-03-30 14:03:11 UTC

I recently spent time with 150 8th graders as part of a career day at a local middle school. I spoke to them about my path in cybersecurity & cryptocurrency.
I was surprised by their interest & knowledge of #Bitcoin. Several of them, mostly girls told me that owned some. They asked questions about self custody and private key management.
I was expecting to start getting questions about the FUD we constantly hear (criminal use, climate impact, scams, etc). I heard non of that. Just engaging conversations about the utility, the value and global benefits of #Bitcoin. They get it.
I later realized these same kids are not on Twitter or Facebook and they don’t read or watch mainstream media. They are not inundated with anti-crypto FUD 24/7.
I didn’t know what to expect about my visit, but I now have more hope for the future.

2023-03-29 00:42:09 UTC

https://nostr.build/av/nostr.build_149db81d9c3d27c584449a8d688929249e5384a7c90c33fbfd4283935a1c3ff2.mp4
New puppy arrived today.

2023-03-28 11:49:35 UTC

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Avoided, but if you need to cover it up with strong cologne or perfume, I’ll take the BO.

2023-03-28 11:47:03 UTC

Back from 2 weeks of travel. What did I miss?

2023-03-11 02:04:04 UTC

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https://nostr.build/i/nostr.build_1fcad20c9c16fc2ce832dabb3d3eb4f0f194c4db33f88671c6be587bf2c622d1.jpeg

2023-03-11 01:54:42 UTC

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Bulleit for cocktails, Blanton’s or if special occasion Black Maple Hill for sipping

2023-03-05 13:40:18 UTC

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When where?

2023-03-04 15:14:23 UTC

GM! What’s your weekend plans?
I’m headed to meet some family for a fried chicken lunch.

2023-03-03 01:56:36 UTC

What did you learn today?

2023-03-03 01:12:30 UTC

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You!

2023-03-02 03:35:15 UTC

Good night zappers! ⚡️⚡️⚡️

2023-03-01 18:52:36 UTC

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Too much zapping ⚡️or not enough?

2023-03-01 18:51:09 UTC

Wow. That’s a lot of notifications.

2023-03-01 18:21:53 UTC

I’ve been reshaping my meals each day to be healthier. Stuck with it for 2 months so far.
What are eating for breakfast each day?

2023-03-01 18:04:04 UTC

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I’ll ask Eric Hughes what he thinks about Nostr. He is speaker at my conference in May.

2023-03-01 17:49:07 UTC

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You _may_ be able to leverage Secure Enclave on iOS to store the private key.
https://developer.apple.com/documentation/security/certificate_key_and_trust_services/keys/protecting_keys_with_the_secure_enclave

2023-03-01 17:43:16 UTC

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The one I don’t talk about. 😂

2023-03-01 17:36:49 UTC

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https://github.com/nostr-protocol/nips

2023-03-01 17:35:41 UTC

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How big?

2023-03-01 17:35:10 UTC

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Hello!

2023-03-01 17:28:22 UTC

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I’d hope no one is zapping from their main wallet, but I’m sure there are some. A #[5] is what I use for only zapping. I have another lighting wallet for purchases and both are funded by my Kraken account when they get low. Nothing in social should ever be touching cold wallets.

2023-03-01 11:34:36 UTC

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Add your lightning address to your profile.

2023-03-01 11:12:09 UTC

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Lol. I see we are!

2023-03-01 11:10:49 UTC

GM! We still zapping today? ⚡️

2023-03-01 02:42:14 UTC

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I was an EFNet Oper back in the 90s.

2023-03-01 01:02:51 UTC

Is a guide on zapping etiquette?

2023-03-01 00:55:01 UTC

Anyone you recommend I follow?

2023-03-01 00:54:19 UTC

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That’s a nope. 😂

2023-02-28 18:33:55 UTC

Is anyone following me that I know IRL?

2023-02-28 12:34:39 UTC

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Yeah, that’s the Wallet of Satoshi UI. 😂

2023-02-28 12:33:24 UTC

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Not bad so far. This new build is definitely better.

2023-02-28 12:31:46 UTC

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I zapped your post.

2023-02-28 12:28:52 UTC

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I am now for posts.
https://nostr.build/i/nostr.build_85f67a56ca1f465a30bcacdb9590c6212bdd82ecb0512205fd7db97dd44bc885.jpeg

2023-02-28 12:26:45 UTC

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I was having similar trouble. I don’t see the ⚡️on your posts. It didn’t work for me until I added the Wallet of Satoshi “email address” to the Lightning address in my profile.

2023-02-28 12:25:04 UTC

GM ⚡️PV

2023-02-28 12:22:37 UTC

My nostr setup is finally complete: iOS + Damus + Wallet of Satoshi. Zap tested and verified!

2023-02-28 11:34:35 UTC

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Thanks for helping me confirm this is setup correctly!

2023-02-28 11:30:06 UTC

Maybe you can zap my posts now? 😀

2023-02-28 11:26:54 UTC

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Ok, I think there is a bug in #[2] - when I use the Wallet of Satoshi “email address” this seem to work. When I use the Lightning address it doesn’t.

2023-02-28 11:18:29 UTC

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Thanks, I actually do. I was able to see see the ability to send lightning to folks profiles before the iOS upgrade. I just re-added my Lightning address again and can now see zaps in posts. Can you see the ability to zap mine now?

2023-02-28 03:02:17 UTC

Maybe I’m not setup correctly. I’m using the later #[0] for iOS, can anyone see the ability to zap my posts?

2023-02-28 02:59:44 UTC

Someone zap this post, please.

2023-02-26 20:06:53 UTC

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Can’t wait to try it out!

2023-02-26 17:23:58 UTC

GM!

2023-02-20 02:21:48 UTC

Has anyone tried these?
https://nostr.build/i/nostr.build_8b2a76767460b4312f1b883b534587c32434fab4b957889aa6434f4314fdf094.jpeg

2023-02-20 01:55:25 UTC

Anyone doing ice plunges regularly?
https://nostr.build/i/nostr.build_930db79b2d81c8c252e8f17fb4cc058b1c2b9e9f7da9aae1f2317b997da25387.jpeg

2023-02-09 12:46:58 UTC

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Possibly. Depends on the crime. People get put into prison for reasons around the world that most reasonable people would thing isn’t a big deal. Highly skilled and one of those? Probably. Steal, Murder or Rape? No.

2023-02-09 02:49:40 UTC

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I don’t think we really know the answer yet.
If the free relays are not able to keep up with the demand and get flooded with spam, the paid relays may be able to provide better connectivity.
I believe I saw one that is broadcasting to / and filtering spam from popular free relays.

2023-02-09 02:44:00 UTC

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What if you use both types at the same time?

2023-02-08 19:14:28 UTC

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Yes, I see it!

2023-02-08 15:35:44 UTC

Attending THOTCON in Chicago this May?
Here’s the schedule:
https://www.thotcon.org/schedule.html
#chicago #hacking #security #infosec

2023-02-08 11:29:38 UTC

Good morning, #nostr!

2023-02-07 01:27:48 UTC

THOTCON 0xC Keynotes, Speakers and Workshops have been announced!
https://www.thotcon.org/speakers.html
#thotcon #chicago #hacking #security #infosec #cfp

2023-02-06 16:58:00 UTC

If you are part of the hacking community and looking for a NIP-5 verification, THOTCON is offering them. I can set you up. #hacking #security #infosec #nip5

2023-02-06 16:47:57 UTC

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I’m seeing your verification now!

2023-02-06 16:41:40 UTC

#[0] Hello

2023-02-06 15:50:31 UTC

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Thanks! Any suggestions for a good paid relay?

2023-02-06 15:23:36 UTC

What’s the strategy around relays? How many should you have in your list? Is there a too little or too many number to be aware of?

2023-02-06 13:58:09 UTC

2023-02-06 11:26:21 UTC