1. Overview — 0. Review Secure the Solana Ecosystem (1) — Hello Solana Secure the Solana Ecosystem (2) — Calling Between Programs 1. Overview In the previous blog, we introduced how to implement the cross-program invocation via function invoke and function invoke_signed. In this post, we will introduce another basic topic - Program Upgrade. 2. Deploy an Upgradable Program By default, all…

On Feb 2, 2022, an attacker exploited a signature verification vulnerability in the Wormhole network to mint 120k Wormhole-wrapped Ether… — On Feb 2, 2022, an attacker exploited a signature verification vulnerability in the Wormhole network to mint 120k Wormhole-wrapped Ether on Solana. These tokens were not backed by Ether deposits on the Ethereum side of the Portal bridge. …