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All Categories - 0xSimao

Mentorship Series #26

January 16, 2026 · Mentorship
We finished the Panoptic contest on Code4rena. Lesson Summary: Verify pool ID packing...

Mentorship Series #25

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: Simulate full sequences ...

Mentorship Series #24

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary:## Notes When the user doesn't...

Mentorship Series #23

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: There seems to be enough...

Mentorship Series #22

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: Downcasting cuts the number,...

Mentorship Series #21

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: Entry point for UniswapV4 is...

Mentorship Series #20

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: Offset is the byte position in...

Mentorship Series #19

January 16, 2026 · Mentorship
We continued the Panoptic contest on Code4rena. Lesson Summary: Master bit manipulation first ...

Mentorship Series #18

January 16, 2026 · Mentorship
We started the Panoptic contest on Code4rena. Lesson Summary: OZ multicall had a bug when...

Bug Deep Dive #32

January 4, 2026 · Bug Deep Dive
The Factory.deploy function uses create2 to deploy a wallet but reverts (CreateCollision) if...

Bug Deep Dive #31

January 3, 2026 · Bug Deep Dive
Sequence wallets support ERC‑4337 by validating signatures inside validateUserOp() in ERC4337v07....

Bug Deep Dive #30

December 27, 2025 · Bug Deep Dive
When a session call with BEHAVIOR_REVERT_ON_ERROR behavior fails, the entire execution reverts...

Bug Deep Dive #29

December 25, 2025 · Bug Deep Dive
Consider a scenario where (1) the wallet is behind the checkpointer and (2) a chained signature...

Bug Deep Dive #28

December 24, 2025 · Bug Deep Dive
Due to insufficient safeguards against price drops, liquidators receive less collateral than...

Bug Deep Dive #27

December 23, 2025 · Bug Deep Dive
Rewards obtained from FSTO through the delegation of voting power to signal providers can be...

Bug Deep Dive #26

December 22, 2025 · Bug Deep Dive
A collateral token may become invalid following a governance decision. In such a case, the agent...

Bug Deep Dive #25

December 21, 2025 · Bug Deep Dive
To protect users against bricked positions by malicious subscriber contracts, Uniswap V4 notifier...

Bug Deep Dive #24

December 20, 2025 · Bug Deep Dive
When ViewFacet.queryAssetBalances calculates the earnings for compounded maker, it ignores the...

Bug Deep Dive #23

December 19, 2025 · Bug Deep Dive
View::queryAssetBalances is used to query how much assets an user would receive if they were to...

Bug Deep Dive #22

December 18, 2025 · Bug Deep Dive
The protocol uses the TransferHelper.safeTransferFrom(token, _currentTokenRequester, msg.sender,...
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