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davidu

5,831 karma

I'm David Ulevitch. Founder and CEO of OpenDNS. GP at a16z.

I have a website at http://david.ulevitch.com/

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Comments1,073
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sotonye.substack.com 5y ago

The Architecture of Tomorrow: An Interview with Ben Horowitz

davidu
3pts0
www.fbi.gov 11y ago

Former Executive Charged with Price Fixing in Online Marketplace Prosecution

davidu
1pts1
techcrunch.com 13y ago

OpenDNS closes Series B, builds out enterprise network security

davidu
3pts0
blog.david.ulevitch.com 13y ago

Unattached: A subtle change in email attachments

davidu
1pts0
www.businessinsider.com 13y ago

Startup Office Tour: OpenDNS

davidu
1pts0
blog.david.ulevitch.com 14y ago

Pulling the alarm doesn't cause a fire

davidu
2pts0
www.eventbrite.com 15y ago

Next OpsU (devops) meeting is tomorrow in San Francisco (it's free)

davidu
4pts0
www.nytimes.com 15y ago

A Second Tour as C.E.O.

davidu
62pts22
gettys.wordpress.com 15y ago

An amazing tale of broadband latency and congestion

davidu
5pts0
news.ycombinator.com 15y ago

Ask HN: Do CS students enjoy C anymore?

davidu
72pts98
news.ycombinator.com 16y ago

Ask YC: Large inexpensive wall mount computer displays?

davidu
12pts11
news.ycombinator.com 16y ago

Ask YC: Automated ways to perform credit check?

davidu
7pts3
blog.opendns.com 16y ago

OpenDNS adopts faster and more secure alternative to DNSSEC

davidu
8pts1
news.ycombinator.com 16y ago

4.3.2.1 -- Another google DNS ip

davidu
69pts21
www.amemototheinternet.com 17y ago

Display Ads will fall sharply in 2009 -- Good

davidu
1pts0
news.ycombinator.com 17y ago

Do any of you use Salesforce.com regularly?

davidu
2pts2
www.amemototheinternet.com 18y ago

The best analogy of why DPI is a really bad idea

davidu
1pts0
www.amemototheinternet.com 18y ago

More reasons to launch early and often.

davidu
2pts1
www.amemototheinternet.com 18y ago

A quick note on website heatmaps

davidu
2pts0
opendns-sysadmin-day-party.eventbrite.com 18y ago

Celebrate SysAdmin Appreciation Day and OpenDNS's 2nd Birthday

davidu
3pts2
Small Engines 3 months ago

This helps define some of the challenges with making very very small turbine engines. We have electrical (lithium) powered drones but they are heavy and have low energy density compared to what a liquid fuel + turbine could provide. But could we make a 2 inch diameter turbine engine reliably? Maybe!

Koralm Railway 7 months ago

It turns out, you can build new high speed railways. Take note California!

This article doesn't explain why a hudson valley grown honeycrisp would taste worse now than 10 years ago? Those are still coming from the boutique farms where you can pick them off the tree. It only explains why big apple in Washington is ruining the national honeycrisp market. Or did I miss something?

The word temporary is only used to placate people who don't understand nuclear / nuclear waste (waste is a bad term) and who have been badly influenced by 70 years of misinformation from The Sierra Club and others.

None of this spent fuel is really that spent, has plenty of other use cases, and should be used. Also, storing it in concrete casks for 40 years is perfectly safe and has caused 0 harm.

The cost is largely due to regulatory hurdles that are slowly being eroded.

I don't know if this article is true but many assertions are untrue. The bowlero stock is pretty level and up from when it went public. It never made it past $17 from the $10 opening (SPAC probably?). So I have no idea what this author is talking about when he says it's been a wild ride.

DNSSEC is a complicated kitchen sink that doesn't do the fundamentals (encrypt DNS traffic). It is also very black-box with the current tooling (not by design, but by implementation) which makes deployment perilous and confusing.

It's really a PKI infrastructure masquerading as a secure DNS system.

There's value in a PKI infrastructure for domain names, but it probably won't look exactly like DNSSEC. And there's value in encrypting DNS, but that is definitely not DNSSEC. I helped invent and deploy DNSCrypt which is strong encrypted DNS, but doesn't provide the PKI components. There are plenty of ways to do that part, however, that would be much lighter in weight than DNSSEC.

I'm not motivated to do it now with my current day job (American Dynamism) but someone out there could.

We're not one monolith of content. Folks post what they want and think is interesting. You can also imagine a lot of our portco CEOs don't love when we mention their competitors.

Some of us do it more than others, depending on the topic or point of the post. Market maps do it a lot more than position pieces, as you'd expect, for instance. Anyways, the feedback is good.

Meraki and OpenDNS both became better post acquisition, and in both cases I’d say it was because Cisco let them continue to maintain a lot of control, the leaders stayed around, and the majority of the engineering teams did, too. Cisco has a long list of successful acquisitions. The release says Gary will report to Chuck directly, which is a strong sign Chuck will make sure Splunk succeeds. (nb, I was CEO of OpenDNS)