The Bat!secure e-mail Message Base Index file (.tbi)

.tbi file signature | application/octet-stream

The Bat!secure e-mail Message Base Index file

Safe

Magic Bytes

Offset 0


              00 00 00 00 14 00 00 00

Sources: Gary Kessler

All Known Signatures

2 signature variants are documented for .tbi files across multiple sources.

Hex Signature	Offset	Sources
00 00 00 00 14 00 00 00	0	Gary Kessler
01 01 47 19 A4 00 00 00 00 00 00 00	0	Gary Kessler

Extension

.tbi

MIME Type

application/octet-stream

Byte Offset

Risk Level

Safe

Validation Code

How to validate .tbi files in Python

Python

def is_tbi(file_path: str) -> bool:
    """Check if file is a valid TBI by magic bytes."""
    signature = bytes([0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00])
    with open(file_path, "rb") as f:
        return f.read(8) == signature

How to validate .tbi files in Node.js

Node.js

function isTBI(buffer: Buffer): boolean {
  const signature = Buffer.from([0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00]);
  return buffer.subarray(0, 8).equals(signature);
}

How to validate .tbi files in Go

func IsTBI(data []byte) bool {
    signature := []byte{0x00, 0x00, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00}
    if len(data) < 8 {
        return false
    }
    return bytes.Equal(data[:8], signature)
}

API Endpoint

GET /api/v1/tbi


              curl https://filesignature.org/api/v1/tbi

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .tbi file?

A .tbi file is a The Bat!secure e-mail Message Base Index file file. The Bat!secure e-mail Message Base Index file

What are the magic bytes for .tbi files?

The magic bytes for The Bat!secure e-mail Message Base Index file files are 00 00 00 00 14 00 00 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .tbi file?

To validate a .tbi file, read the first bytes of the file and compare them against the known magic bytes (00 00 00 00 14 00 00 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .tbi files?

There is no officially registered MIME type for .tbi files. Systems typically use application/octet-stream as a generic fallback when handling this format.

Is it safe to open .tbi files?

The Bat!secure e-mail Message Base Index file (.tbi) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.