Manual Review

A thorough line-by-line review was conducted on the codebase to identify potential malfunctions and vulnerabilities in Alliance Block's subscription, session and verification portals.

As the project at hand implements validation callbacks meant to conform to the Rain Protocol implementation, intricate care was put into ensuring that the flow of funds within the system conforms to the specifications and restrictions laid forth within the protocol's specification and that the code is compliant with the external standards it is meant to fulfill.

We validated that all state transitions of the system occur within sane criteria and that all rudimentary formulas within the system execute as expected. We pinpointed an important access control flaw within the system which could have had severe ramifications to its overall operation, however, it was conveyed ahead of time to the Alliance Block team to be promptly remediated.

Additionally, the system was investigated for any other commonly present attack vectors such as re-entrancy attacks, mathematical truncations, logical flaws and ERC / EIP standard inconsistencies. The documentation of the project was satisfactory to an exemplary extent.

A total of 10 findings were identified over the course of the manual review of which 7 findings concerned the behaviour and security of the system. The non-security related findings, such as optimizations, are included in the separate Code Style chapter.

The finding table below enumerates all these security / behavioural findings:

ID	Severity	Addressed	Title
SPP-01M			Incorrectly Calculated TKN Amount
SPT-01M			Slightly Inaccurate Documentation
CON-01M			Incorrect Enforcement of Extension Factor
CON-02M			Incorrectly Calculated TKN Amount
USD-01M			Inexplicable Centralization of Oracle Management
VPP-01M			Unconsumed Token Limits
VPP-02M			Inexistent Access Control of Approve Hook