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The Polylog Crypto Intelligence Brief

Morning Edition · Monday, June 15, 2026Published at 1:40 AM EDT · New York

Security Roundup: Bridge and Mint Exploits Drive a Heavy Run of June Losses

Syscoin's bridge bled an estimated $10 million through a proof-validation flaw, while TesseraDAO lost about $2.5 million to an unauthorized token mint.

Security Roundup: Bridge and Mint Exploits Drive a Heavy Run of June Losses

Several on-chain incidents tracked by Rekt News underscore a recurring set of failure modes this month. The largest involved the Syscoin bridge, where a parsing error in the relay's proof-validation code let an attacker mint approximately 5…

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