Phong
@np-tokumei.net
I moved to https://www.linkedin.com/in/hoangnguyenphong
Assistant Professor @cs.ubc.ca| Research on Network Security & Online Privacy
Assistant Professor @cs.ubc.ca| Research on Network Security & Online Privacy
Wrapped up an amazing week at USENIX Security ‘25 #USESEC25 in Seattle! Great to catch up with old friends & meet new faces in the security & privacy research community.
Huge congrats to the IRBlock team on the Honorable Mention 🎉
All credit goes to the hardworking students!
@cs.ubc.ca
Huge congrats to the IRBlock team on the Honorable Mention 🎉
All credit goes to the hardworking students!
@cs.ubc.ca
August 16, 2025 at 3:30 AM
Wrapped up an amazing week at USENIX Security ‘25 #USESEC25 in Seattle! Great to catch up with old friends & meet new faces in the security & privacy research community.
Huge congrats to the IRBlock team on the Honorable Mention 🎉
All credit goes to the hardworking students!
@cs.ubc.ca
Huge congrats to the IRBlock team on the Honorable Mention 🎉
All credit goes to the hardworking students!
@cs.ubc.ca
🚨Exciting research from Jonas Tai and Karthik Nishanth (my first MSc students @cs.ubc.ca) & Peter Whiting (intern from @uwaterloo.ca)
This week, at the 34th USENIX Security Symposium in Seattle, WA, they’ll present: "𝐈𝐑𝐁𝐥𝐨𝐜𝐤: 𝐀 𝐋𝐚𝐫𝐠𝐞-𝐒𝐜𝐚𝐥𝐞 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐒𝐭𝐮𝐝𝐲 𝐨𝐟 𝐭𝐡𝐞 𝐆𝐫𝐞𝐚𝐭 𝐅𝐢𝐫𝐞𝐰𝐚𝐥𝐥 𝐨𝐟 𝐈𝐫𝐚𝐧"
This week, at the 34th USENIX Security Symposium in Seattle, WA, they’ll present: "𝐈𝐑𝐁𝐥𝐨𝐜𝐤: 𝐀 𝐋𝐚𝐫𝐠𝐞-𝐒𝐜𝐚𝐥𝐞 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐒𝐭𝐮𝐝𝐲 𝐨𝐟 𝐭𝐡𝐞 𝐆𝐫𝐞𝐚𝐭 𝐅𝐢𝐫𝐞𝐰𝐚𝐥𝐥 𝐨𝐟 𝐈𝐫𝐚𝐧"
August 11, 2025 at 9:30 PM
🚨Exciting research from Jonas Tai and Karthik Nishanth (my first MSc students @cs.ubc.ca) & Peter Whiting (intern from @uwaterloo.ca)
This week, at the 34th USENIX Security Symposium in Seattle, WA, they’ll present: "𝐈𝐑𝐁𝐥𝐨𝐜𝐤: 𝐀 𝐋𝐚𝐫𝐠𝐞-𝐒𝐜𝐚𝐥𝐞 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐒𝐭𝐮𝐝𝐲 𝐨𝐟 𝐭𝐡𝐞 𝐆𝐫𝐞𝐚𝐭 𝐅𝐢𝐫𝐞𝐰𝐚𝐥𝐥 𝐨𝐟 𝐈𝐫𝐚𝐧"
This week, at the 34th USENIX Security Symposium in Seattle, WA, they’ll present: "𝐈𝐑𝐁𝐥𝐨𝐜𝐤: 𝐀 𝐋𝐚𝐫𝐠𝐞-𝐒𝐜𝐚𝐥𝐞 𝐌𝐞𝐚𝐬𝐮𝐫𝐞𝐦𝐞𝐧𝐭 𝐒𝐭𝐮𝐝𝐲 𝐨𝐟 𝐭𝐡𝐞 𝐆𝐫𝐞𝐚𝐭 𝐅𝐢𝐫𝐞𝐰𝐚𝐥𝐥 𝐨𝐟 𝐈𝐫𝐚𝐧"
4/
Raw ASN-level data from I2P Metrics shows this collapse clearly — even the largest providers like AS197207 and AS58224 went dark.
Note: I2P Metrics hides or put together ASNs with <20 I2P routers to preserve privacy.
📊 Table from router snapshots below ⬇️
Raw ASN-level data from I2P Metrics shows this collapse clearly — even the largest providers like AS197207 and AS58224 went dark.
Note: I2P Metrics hides or put together ASNs with <20 I2P routers to preserve privacy.
📊 Table from router snapshots below ⬇️
June 24, 2025 at 6:18 AM
4/
Raw ASN-level data from I2P Metrics shows this collapse clearly — even the largest providers like AS197207 and AS58224 went dark.
Note: I2P Metrics hides or put together ASNs with <20 I2P routers to preserve privacy.
📊 Table from router snapshots below ⬇️
Raw ASN-level data from I2P Metrics shows this collapse clearly — even the largest providers like AS197207 and AS58224 went dark.
Note: I2P Metrics hides or put together ASNs with <20 I2P routers to preserve privacy.
📊 Table from router snapshots below ⬇️
2/
We observed a sharp drop in I2P router presence in Iran beginning June 13, 2025.
On that day, there were 1,496 active routers.
By June 18, this fell to just 209.
And by June 19–20, there were no routers visible from Iran.
We observed a sharp drop in I2P router presence in Iran beginning June 13, 2025.
On that day, there were 1,496 active routers.
By June 18, this fell to just 209.
And by June 19–20, there were no routers visible from Iran.
June 24, 2025 at 6:18 AM
2/
We observed a sharp drop in I2P router presence in Iran beginning June 13, 2025.
On that day, there were 1,496 active routers.
By June 18, this fell to just 209.
And by June 19–20, there were no routers visible from Iran.
We observed a sharp drop in I2P router presence in Iran beginning June 13, 2025.
On that day, there were 1,496 active routers.
By June 18, this fell to just 209.
And by June 19–20, there were no routers visible from Iran.
🧵1/
Interesting observations about @geti2p.bsky.social access disruptions in Iran — I’d like to add to this based on measurements from i2p-metrics.np-tokumei.net, a system I built several years ago to collect I2P Metrics, supported by @opentechfund.bsky.social
Here’s what the 🇮🇷 Iran data shows:
📉👇
Interesting observations about @geti2p.bsky.social access disruptions in Iran — I’d like to add to this based on measurements from i2p-metrics.np-tokumei.net, a system I built several years ago to collect I2P Metrics, supported by @opentechfund.bsky.social
Here’s what the 🇮🇷 Iran data shows:
📉👇
June 24, 2025 at 6:18 AM
🧵1/
Interesting observations about @geti2p.bsky.social access disruptions in Iran — I’d like to add to this based on measurements from i2p-metrics.np-tokumei.net, a system I built several years ago to collect I2P Metrics, supported by @opentechfund.bsky.social
Here’s what the 🇮🇷 Iran data shows:
📉👇
Interesting observations about @geti2p.bsky.social access disruptions in Iran — I’d like to add to this based on measurements from i2p-metrics.np-tokumei.net, a system I built several years ago to collect I2P Metrics, supported by @opentechfund.bsky.social
Here’s what the 🇮🇷 Iran data shows:
📉👇