auth1.secureWipePassword();
        assertNotEquals(auth1, auth2);
    }

    /**
     * Test concurrent password access and wiping
     */
    @Test
    public void testConcurrentPasswordAccess() throws InterruptedException {
        final NtlmPasswordAuthenticator auth = new NtlmPasswordAuthenticator("user", "ConcurrentPass123!");
        final int threadCount = 10;