Disclosure: Rare Bug in Umbra Resolved
This post is a disclosure of a bug in the Umbra web client which, in a rare set of circumstances, may have resulted in the loss of user funds.
Ben DiFrancesco
CEO & Senior Engineer
Tag: umbra
The EF Funds ScopeLift to Advance Stealth Address Standardization and Umbra v2
We're excited to announce that ScopeLift has received a grant from the Ethereum Foundation to advance stealth address standardization on the EVM and begin work on Umbra v2.
Ben DiFrancesco
CEO & Senior Engineer
Umbra v2: Flexible, Interoperable, and More than Just Payments
In this post, we'll share our preliminary conception of an architecture that will support stealth payments even better than Umbra v1 does, but is also flexible enough to support many other use cases.
Ben DiFrancesco
CEO & Senior Engineer
Introducing Umbra – Privacy Preserving Stealth Payments On The Ethereum Blockchain
On March 31st, 2020, Vitalik Buterin tweeted about the need for a stealth address scheme in the Ethereum ecosystem. Less than two months later, we’re excited to announce Umbra, a protocol for simple stealth payments on Ethereum.
Ben DiFrancesco
CEO & Senior Engineer
Progress Update: Stealth Address Standardization and Umbra Enhancements
We share our progress on stealth address ERCs, Umbra improvements, and future goals, fueled by an Ethereum Foundation Grant.
Ben DiFrancesco
CEO & Senior Engineer
Umbra Audit Updates
A security-first posture is one our core values at ScopeLift. The responsibility that comes with writing software that handles other people’s money demands it. That’s why we’re excited to announce two security audit updates related to Umbra today.
Ben DiFrancesco
CEO & Senior Engineer
Umbra OG: A Collectible NFT for our Supporters
This support, in particular, means an enormous amount to us. For so many individuals to give organically toward the development of more private payments on Ethereum has consistently blown us away. It motivates us to keep pushing Umbra forward. Today, we want to offer a small gesture of thanks.
Ben DiFrancesco
CEO & Senior Engineer
Umbra Frontend Bug Disclosure User Action Recommended
This post is a disclosure of a now-patched bug found in the Umbra frontend. The bug could have resulted in Umbra being configured incorrectly for users in rare circumstances. As a result, these users would not see funds on 'Receive' page that were sent to their account.
Ben DiFrancesco
CEO & Senior Engineer
Umbra is Live on Polygon
We’re excited to announce that Umbra is now available on the Polygon scaling network. Users can simply select Polygon from the network selector to use the app there.
Ben DiFrancesco
CEO & Senior Engineer
Umbra is Live
We are thrilled to announce, after many months of work, that Umbra is live on mainnet and available for public use. In fact, the protocol was soft launched two weeks ago to a small group of testers who diligently acted as our guinea pigs. We're grateful for all the feedback they provided.
Ben DiFrancesco
CEO & Senior Engineer
Stealth Payments with Umbra Now Available on Optimism and Arbitrum
The ScopeLift team is excited to announce that Umbra is now available on the Optimism and Arbitrum Layer 2 networks. The two rollup networks mark the third and fourth networks where users can now use Umbra to send privacy preserving payments, joining Polygon and the Ethereum Mainnet.
Ben DiFrancesco
CEO & Senior Engineer
Umbra Upgrades its Registry and Moves Out of Beta
Today marks an important milestone for Umbra. With our deployment of a new and improved stealth key registry system, we are officially moving the project out of its Beta phase. What does this mean? Put simply, Umbra is ready for production use.
Ben DiFrancesco
CEO & Senior Engineer
Umbra Reaches Phase One on Road to Mainnet
Umbra has reached another milestone in our journey to mainnet. Today, we shipped our Phase 1 release of the protocol to the Rinkeby testnet. This release lays the groundwork for Phase 2, which should be done sometime in March. In fact, the version shipped today includes some of the updates that were originally earmarked for the second phase.
Ben DiFrancesco
CEO & Senior Engineer
Umbra Receives MolochDAO Grant
We are grateful and excited to announce that Umbra has received a grant from MolochDAO. Since we launched the stealth address protocol to the Ethereum mainnet in June, we’ve been learning from our early adopters and making small improvements to the system around the edges. This grant will enable us to accelerate the work of pushing Umbra forward.
Ben DiFrancesco
CEO & Senior Engineer
An Update on Umbra's Funding and Future
In this post, we’ll give you an overdue update on the funding and development of the Umbra protocol. To start, let’s review what Umbra is.
Ben DiFrancesco
CEO & Senior Engineer
Umbra v2 Prototypes And Designs
In January 2024, we announced the Ethereum Foundation had funded ScopeLift's work to advance stealth addresses in the Ethereum ecosystem for six months. Since then, we have shared two more updates on our progress. Now it's time for us to publish our final update on this phase of our work.
Ben DiFrancesco
CEO & Senior Engineer