Security

Electrum Fixes Lightning Backup Bug: New Exports Required for Affected Wallets

Electrum has released a security update addressing a bug in Lightning backups that could cause older backups of wallets with non-deterministic Lightning keys to lack crucial information. Affected users must export new backups from their wallet's original data to prevent loss of funds from anchor channels.

Friday, October 2, 2026BTC
Issue cover: Bitcoin Above $86,000: Institutional Interest and Regulatory Progress Drive Market
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Electrum fixes a bug in Lightning backups that could affect fund retrieval from anchor channels.

Affected wallets with non-deterministic Lightning keys require new exports.

A software upgrade alone does not restore lost key material.

Users should use Electrum 4.8.2 or newer and update backups.

Story

Electrum has released a security update that fixes a bug in Lightning backups. This bug affects older backups of wallets with non-deterministic Lightning keys, which may lack the key needed to retrieve funds from anchor channels after a peer closes them. Electrum strongly recommends that affected users create new exports from their wallet's original data. A software upgrade alone cannot restore key material that has already been lost with this data. The bug only occurs when both non-deterministic Lightning keys and an anchor channel backup are present. Non-deterministic Lightning keys cannot be restored from the wallet's seed. The warning applies to both individual channel exports and exported full wallet backups used for Lightning recovery. To minimize the risk of fund loss, users should use Electrum version 4.8.2 or newer and ensure their backups are current and complete.

Issue context

The crypto market presents mixed but predominantly positive signals in this issue, led by Bitcoin, which has surpassed the $86,000 mark. This growth is supported by a combination of increasing institutional interest and evolving regulatory frameworks. Citibank has significantly raised its 12-month Bitcoin price forecast to $113,000, while the US Securities and Exchange Commission (SEC) has proposed rules to facilitate self-custody of crypto assets by advisors and funds. These developments signal growing mainstream acceptance of Bitcoin in traditional finance and could pave the way for further institutional investment. Concurrently, spot Bitcoin ETFs continue to record substantial inflows, underscoring sustained demand for regulated investment products. While Bitcoin shows strength, Ethereum experiences ETF outflows and faces challenges from recent security incidents within its ecosystem. Solana, however, demonstrates robust ecosystem growth and institutional inflows, indicating a differentiated market dynamic.

Current market movements reveal a clear divergence between Bitcoin and Ethereum. While Bitcoin benefits from institutional interest and regulatory progress, Ethereum faces challenges from outflows and security concerns. Solana, on the other hand, shows robust development. Note that positive news and inflows do not always directly correlate with immediate price increases, and security risks persist across the industry. Your risk tolerance and due diligence are crucial, as the market remains volatile and past performance is no guarantee of future results.

Market pulse

BTC

$86K

+2.19% 24h / +2.13% 7d

Fear & Greed

72

Greed

BTC Funding

+0.0073%

20 perp markets · Open Interest $57.1B

BTC Open Interest

$57.1B

24h volume $88.3B · basis +0.018%

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This story is part of the Biturai Market Brief and is for informational purposes only. No investment advice.