Shopify Security & Checkout Fix

My Shopify store needs a thorough tune-up. I’m looking for someone who can run a complete security and performance audit, then tackle the specific problems I’m facing:

• Security: I’m worried about virus or malware infections, possible unauthorized access and any avenue for data breaches. I want the store scanned, cleaned and hardened without disrupting day-to-day trading.
• Performance: page-speed has dipped; I’d like clear recommendations and the quick-win fixes implemented.
• Metafield cleanup: there are piles of legacy metafields from old apps. Please identify what’s safe to delete and tidy them up so the theme and admin stay lean.
• Theme maintenance: several theme sections throw “block reference” errors after a recent update. I need those references repaired so all content shows correctly.
• Cart / checkout: customers in multiple regions report payment errors that stop the transaction right at the gateway. Diagnose and repair whatever is causing that break.
• Spam: contact forms are being hammered; I’m fielding dozens of junk emails daily. Put an effective anti-spam measure in place (e.g. reCAPTCHA, honeypots or app-based filtering).

Acceptance criteria
– Clean security scan with no malware flagged
– Checkout completes successfully for test orders in at least three regions
– All theme blocks render without errors
– Unused metafields removed; a short report lists what was deleted
– Spam volume reduced to a manageable trickle

If you have solid Shopify Liquid, theme, and security experience and can deliver these results, let’s get started.