Filippo Valsorda✓ Add us as a preferred source on Google
🔄 Data last refreshed 2 months ago
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Make a deal with Filippo Valsorda
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
56.6K
Account age
3 yrs
💰 Suggested sponsorship rate
$317 – $515 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Filippo Valsorda
📊 Post engagement
Recent posts · likes + reposts
Jun 28latest
96
Avg engagement / post
38–128
Typical post (engagement)
0.2%
Engagement vs followers
62/100
Consistent reach
Apr 2023
On Bluesky since
Half of recent posts land between 38 and 128 likes + reposts (median 80) — a dependable floor a sponsored post can count on.
🔥 Top post: Me: lots of urgent stuff to do, what should I pick? Brain: actu · 294 likes + reposts
📊 Activity & format
Posting cadence
3.2 / week
Posts several times a week.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
108×
Follows 526 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Bluesky ↗
JFrog Xray is defective, flagging unaffected binaries as vulnerable, and the cost is borne by maintainers who have to field requests to work around it.
This is a real open source sustainability issue.
(The problem here is JFrog, not the …
Passkeys can be stored just like password hashes!
I'm proposing an interoperable $webauthn$v=1$… format, and a Go API that uses these passkey records for authentication.
I'm looking for feedback before proposing this as crypto/passkey fo…
Getting kinda uncomfortable with the Zig dunking, which AFAICT is entirely based on the tone of one of Andrew's posts?
For example, supporting Fil-C as a build target makes IMHO perfect sense for Zig, a language where embedding C code is …
"Could you support $SMALL_TWEAK? It's very small! Why not?? Do you hate us?"
Here's a bunch of work to fix assembly that assumed it could overread/write the AES-GCM ciphertext because it'd always be followed by 16 bytes of tag.
(Also, so…
Setting up Gerrit on @exe.dev with X-ExeDev-Email auth took 60s!
However, that doesn't make git work. I hacked together a little proxy that does a tiny amount of OAuth2, exchanging exe.dev auth in the browser for a token that works with g…
The endless long tail of the post-quantum transition includes: Apple Business encrypts FileVault recovery keys to a customer-generated RSA public key.
There's a literal "openssl req -newkey rsa:2048" in the docs.
support.apple.com/guide/…
I'm so jealous. Wikipedia banned THE CO-FOUNDER for off-wiki canvassing. Meanwhile the IETF is burning endless cycles on Bernstein's explicit WGLC external influence campaign and handing out one-month moderation periods over his silly sove…
Hmm, do we need to test this hypothesis?
I have a Blåhaj and I do like foxes 🦊
Anthropic reported an issue in Sunlight that could have allowed (along with a colluding, compromised, or separately vulnerable CA) forging an SCT with 2⁶⁴ work.
All Sunlight CT logs are being patched today.
Ironically, they had under-sco…
It just occurred to me that with LLMs it’s now possible to do meaningful reviews of the whole diff of dependency updates.
This is both obvious and not something I had adjusted for.
Bernstein's main achievements, by decade:
1990s: Bernstein v. United States
2000s: ChaCha20, Poly1305, Curve25519, Ed25519
2010s: SPHINCS
2020s: sabotaging the post-quantum transition
This is so f***ing frustrating. And sad. But mostly f…
🦋 Handle & authenticity
✅ Domain-verified
@filippo.abyssdomain.expert
The handle is the domain filippo.abyssdomain.expert. On Bluesky a domain handle proves the owner controls that website — so this is verifiably the real filippo.abyssdomain.expert account, not an impersonator.
On Bluesky since
Apr 2023
An early adopter from the invite-only beta (before the Feb 2024 public launch) — an original, established account.
💡 Facts
🗓️Joined Bluesky in 2023 — 3 years ago.
👁️Averages 96 views per post.
📤Posts about 3.2× per week.
🏅Earned the 10K Followers for passing 10K followers.
🕵️ Fake follower check
Estimated95/100
Excellent
Credibility score
99%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 99% real, active audience · Low fake-follower risk.
- Strong engagement (~0.2% of followers engage each post) — an active, real audience.
- Organic base — far more followers than accounts it follows.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
RC F'13, F2'17
Cryptogopher / Go cryptography maintainer
Professional open source maintainer
https://filippo.io / https://github.com/FiloSottile
https://mkcert.dev / https://age-encryption.org
https://sunlight.dev / https://filippo.io/newsletter
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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Frequently asked questions
How much does Filippo Valsorda charge for a sponsorship?
Filippo Valsorda hasn't published fixed prices yet. Send a proposal through SocialDB and agree terms directly — your payment is held in escrow until the work is approved.
How do I contact Filippo Valsorda for a brand deal or collaboration?
Send a paid deal or collab request right here on SocialDB — we notify Filippo Valsorda, and once they accept, your payment is held safely in escrow and released when the work is approved. You don't need to track down an email.
How many followers does Filippo Valsorda have?
Filippo Valsorda has 56,567 followers on Bluesky.
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