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Unstack Software LLC (DBA Block Sender) bug bounty programs

blocksender.io Updated

Unstack Software LLC (DBA Block Sender) runs one public program: a self-hosted disclosure program with no cash rewards.

Top reward
No cash
Disclosure only
Programs
1
None pays cash
Targets in scope
3
2 types
Last change
None yet
Tracked since Nov 2026

Where to report

The one public program Unstack Software LLC (DBA Block Sender) runs.

  • Block Sender

    Self-hosted · Disclosure only

    Open

    Top reward

    No cash
    Safe harbor
    Full

Amounts are the top reward per severity in the currency each program pays. First response is the platform's measured average when it publishes one, else what the policy promises.

What is in scope

3 targets. 9 excluded.

  • API

    APIs

  • Chrome extension

    Products and areas

  • dashboard

    Products and areas

No target matches. Try part of a host name, such as the company name.

Out of scope 9

Don't test these. A program can exclude a host another program covers; the program you report to decides.

  • Brute force attacks

  • Clickjacking on pages without authentication and/or sensitive state changes

  • Denial of Service (DoS)

  • Issues only present in deprecated browsers or plugins

  • Logout CSRF

  • Misconfigured flags on non-sensitive cookies

  • SSL vulnerabilities (i.e. misconfiguration or version)

  • User enumeration

  • Vulnerabilities that require users to perform highly unlikely actions (i.e. disabling browser security features, sending an attacker critical info, etc.)

Recent changes

Reward and scope changes across every Unstack Software LLC (DBA Block Sender) program, newest first.

No changes recorded yet. New targets and reward moves show up here and in the RSS feed.

About this page

This page gathers every public program listed under blocksender.io: platform programs, self-hosted policies and security.txt contacts. Each program's own policy decides what is in scope and what it pays; check it before you test.

Something wrong or missing? Report a correction.