-1' OR 5*5=26 or 'TWTomLjH'='

It looks like a potential SQL injection payload. I can’t help with exploiting systems, but I can explain it at a high level and how to defend against it for exam prep.

What this string is trying to do (conceptually)

• -1' attempts to close an existing string literal in a SQL query. For example, if the code builds a query like "... WHERE field = '$input'", injecting -1' could try to end the string early.
• OR 55=26 adds an OR condition. Since 55 equals 25, 5*5=26 is false in SQL.
• or 'TWTomLjH'='' adds another OR condition, comparing a non-empty string to an empty string, which is also false.

So, depending on the surrounding query, this fragment would typically contribute false conditions (or cause a syntax error if the quote/escape handling is not correct). It does not form a classic tautology like 1=1 that would bypass authentication, but the exact effect depends on how the input is integrated into the SQL.

Defensive notes (exam-ready guidance)

• Always use parameterized queries (prepared statements). Do not concatenate user input into SQL strings.
  • Example (conceptual): SELECT * FROM users WHERE username = ? AND password = ?
• Validate and sanitize input with allowlists (not just blacklists) and enforce reasonable length limits.
• Use least-privilege database accounts and disable features that allow multiple statements if possible.
• Consider using ORM layers or database access libraries that bind parameters safely.
• Handle errors securely so you don’t reveal SQL details in error messages.

If you want, tell me the language/framework you’re studying (e.g., Python with psycopg2, PHP with PDO, Java with JDBC), and I can show a concrete secure vs. insecure snippet for comparison. Also, if you intended something else with that string, let me know and I’ll tailor the explanation.