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Filippo Valsorda

Filippo Valsorda✓

Bluesky @filippo.abyssdomain.expert
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🔄 Data last refreshed 8 days ago
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Make a deal with Filippo Valsorda

🔒 Paid proposals held safely in escrow — released only when the work's approved.

📣Sponsored postOne post with your link and message, clearly disclosed. $453→ 🧵Sponsored threadA 3–5 post storytelling thread — Bluesky rewards substance o… $1,133→ 📌Pinned sponsored postA sponsored post pinned to the top of my profile for the mon… $1,359/mo→ 🔗Link-in-bio placementYour link in my bio for the month. $680/mo→ 🔁Repost packageI repost your account's posts through the month — distributi… $906/mo→ ⭐Starter-pack placementYour account included in my starter pack — new users follow … $906/mo→ 🎁Giveaway postYou supply the prize — I run the giveaway post and pick winn… $362→ 📦Product seeding / honest reviewSend me your product — I post a disclosed, honest take. Auth… $544→ 🤝Mutual shoutout collabWe shout each other out — a value swap between accounts. Swap→ 🎬UGC HireBranded content for your own channels & ads from $198→ 🎙️Podcast guest spotInvite Filippo Valsorda onto your podcast (~45 min, remote) $198→

Every booking is a normal escrow-protected deal.

Followers
56.6K
Account age
3 yrs
🧰 Free analysis for Filippo Valsorda
🕵️ Fake follower check 📊 Engagement rate 💰 What they charge

Known for

Hmm, do we need to test this hypothesis? I have a Blåhaj and I do like foxes 🦊144 views Hmm, do we need to test this hypothesis? I have a Blåhaj and I do like foxes 🦊

📊 Post engagement

96
Avg engagement / post
0.2%
Engagement vs followers
Apr 2023
On Bluesky since

🔥 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 ↗
🔥 Top post Me: lots of urgent stuff to do, what should I pick? Brain: actually, here's a thought about passkeys, let's do some research, develop opinions, and then write a library, a spec, and a newsletter Me: ಠ_ಠ ★ 294
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 … ★ 23 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… ★ 205 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 … ★ 82 "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… ★ 23 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… ★ 32 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/… ★ 38 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… ★ 66 Hmm, do we need to test this hypothesis? I have a Blåhaj and I do like foxes 🦊 ★ 144 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… ★ 38 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. ★ 80 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… ★ 128

🦋 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

Estimated
81/100
Excellent Credibility score
97%
Real Real audience
Low Fake-follower risk
High Data confidence
  • Est. 97% real, active audience · Low fake-follower risk.
  • Engagement (~0.2% of followers engage each post) is around typical for Bluesky.
  • 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

Estimated

Estimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.

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