Eiji Kitamura / えーじ :verified: Add us as a preferred source on Google
🔄 Data last refreshed 1 month ago
🤝
Make a deal with Eiji Kitamura / えーじ :verified:
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
904
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Eiji Kitamura / えーじ :verified:
📊 Post engagement
Recent posts · likes + reposts
Nov 7latest
5
Avg engagement / post
1–10
Typical post (engagement)
0.6%
Engagement vs followers
55/100
Consistent reach
Nov 2022
On Mastodon since
Half of recent posts land between 1 and 10 likes + reposts (median 2) — a dependable floor a sponsored post can count on.
🔥 Top post: By setting up https://<your-domain>/.well-known/change-password · 14 likes + reposts
📊 Activity & format
Posting cadence
0.27 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 10 text · 2 image · 0 video.
Follower / following
2.2×
Follows 414 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
🔥 Top post
By setting up https://<your-domain>/.well-known/change-password to redirect (302/303/307) to your actual password update page, Chrome, Safari, and major password managers can guide users directly to your change password form.
Modern password managers are great at detecting weak …
I found Mozilla was positive about this feature https://github.com/mozilla/standards-positions/issues/372 , but does anyone know if this has been implemented in Firefox yet?
We are excited to announce that Chrome 149 introduces Immediate UI mode for passkeys and passwords. This new web capability streamlines user sign-in flows by enabling a low-friction experience for your users.
Learn more at https://develo…
DBSC is now available on Chrome for Windows.
Device Bound Session Credentials (DBSC) is a proposed standard that helps mitigate cookie theft by cryptographically binding a session to the user's device at the time of issuance. We've been te…
A deep dive into the very basic concept of #passkeys — RP ID (Relying Party ID)
How to determine a suitable RP ID for your service
What if you have multiple domains
RP ID for apps
https://web.dev/articles/webauthn-rp-id
I made a Chrome Extension that allows you to debug #passkeys.
When implementing passkeys yourself or investigating how passkeys work on another website, setting up a debugger to capture requests and responses or parsing binaries to read th…
Signal API for passkeys is now available on Chrome for Android.
A user deletes their credential on the website, but the passkey remains in their passkey provider. The next time they try to sign in, the passkey provider offers a passkey tha…
Capturing the overview of passkeys is difficult, especially if you are chasing updates. I wrote a personal blog post that captures an end of 2025 version of passkey keywords so you know what to learn.
Key terminologies to get a grasp of pa…
4 new ways Chrome autofill will simplify your holidays
https://blog.google/products/chrome/autofill-improvements/
Chrome can now remember your loyalty card and flight details for faster submission, along with an improved autofill experienc…
RE: https://infosec.exchange/@agektmr/115245262164960496
I'm in SYD to give this talk at Web Directions Developer Summit. See you there.
For those coming to Japan to attend TPAC, welcome! Hope you enjoy your stay here.
DBSC (Device Bound Session Credentials) has started its second origin trial on Chrome .
DBSC is a browser mechanism that allows websites to bind session credentials such as cookies to a device so that it can mitigate chances for cookie the…
DBSC (Device Bound Session Credentials) has started its second origin trial on Chrome .
DBSC is a browser mechanism that allows websites to bind session credentials such as cookies to a device so that it can mitigate chances for cookie the…
🐘 Community & instance
Home server
infosec.exchange
A cybersecurity & infosec server — its members and audience skew toward that niche, so expect a community-aligned, engaged following.
On Mastodon since
Nov 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 5 views per post.
📤Posts about 0.3× per week.
🕵️ Fake follower check
Estimated43/100
Fair
Credibility score
73%
Mixed
Real audience
Medium
Fake-follower risk
High
Data confidence
- Est. 73% real, active audience · Medium fake-follower risk.
- Low engagement (~0.6% of followers engage each post) — a sign of an inflated or inactive audience.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
Chrome @ Google - Developer Advocate at the Web Developer Relations — Identity tech lead.
🔀 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 Eiji Kitamura / えーじ :verified: charge for a sponsorship?
Eiji Kitamura / えーじ :verified: 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 Eiji Kitamura / えーじ :verified: for a brand deal or collaboration?
Send a paid deal or collab request right here on SocialDB — we notify Eiji Kitamura / えーじ :verified:, 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 Eiji Kitamura / えーじ :verified: have?
Eiji Kitamura / えーじ :verified: has 904 followers on Mastodon.
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