System:
 * Operating System: Darwin 18.6.0
 * Processor: Intel(R) Core(TM) i5-7Y54 CPU @ 1.20GHz
 * Microarchitecture: Kaby Lake
 * Microcode: 0xb4
 * Memory: 16.00 GiB

Direct Branch Speculation:
 * Status: Vulnerable
 * __user pointer sanitization: Disabled

Indirect Branch Speculation:
 * Status: Vulnerable
 * Retpoline: Disabled
 * IBPB: Disabled
 * IBRS: Disabled
 * STIBP: Disabled
 * SMEP: Enabled

Speculative Store Bypass:
 * Status: Vulnerable
 * Speculative Store Bypass Disable: OS Support

Meltdown:
 * Status: Vulnerable
 * KPTI Present: Yes
 * KPTI Enabled: Yes
 * PCID Accelerated: Yes
 * PCID Invalidation: Yes

L1 Terminal Fault:
 * Status: Vulnerable
 * L1TF Present: No
 * PTE Inversion: No
 * SMT: Vulnerable
 * L1d Flush Present: No
 * L1d Flush: Available

Micro-architectural Data Sampling:
 * Line Fill Buffers (MFBDS): Vulnerable
 * Store Buffers (MSBDS): Vulnerable
 * Load Ports (MLPDS): Vulnerable
 * Uncached Memory (MDSUM): Vulnerable
 * SMT: Vulnerable
 * MD_CLEAR: Available

그렇습니다. 제 맥북은 완전 무주공산 수준으로 뚫려 있습니다. 대충 짐작은 했지만, 역시 직접 확인하고 나니 참 심란하네요.
참고 : https://mdsattacks.com/