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SSL & Web Security Learning Center

Expert guides and tutorials on SSL/TLS certificates, encryption, PKI, and digital security. Explore the bylines, dates and sources in each guide before applying it to your environment.

205

Guides published

Oct 22, 2026

Last guide updated

Daniel Rehak

Contributor articles

Primary sources

CA/B Forum, RFCs, vendor docs

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205 articles found

Multi-Domain SSL Certificate Price: What It Costs in 2026

DV multi-domain (SAN) SSL runs about $18–$100/year, OV about $70–$300, EV about $75–$400 in 2026. How the base-plus-per-SAN price works, why an EV multi-domain exists when an EV wildcard doesn't, and multi-domain vs wildcard cost.

My-SSL TeamJul 30, 202612 min

Code Signing

Do I Need a Code Signing Certificate?

You need a code signing certificate if you distribute Windows software people download and run — apps, installers, drivers, scripts, or JARs — to remove the 'Unknown Publisher' warning and prove the code is untampered. When you need one, when you don't, and what macOS and mobile use instead.

My-SSL TeamJul 29, 202611 min

Comparisons

S/MIME vs PGP: Which Email Encryption Should You Use?

S/MIME and PGP both sign and encrypt email, but they trust keys in opposite ways. S/MIME uses a CA-issued certificate your mail app already runs; PGP uses a web of trust and usually an add-on. How the two standards differ on trust, client support, and deployment — and which one fits your situation.

My-SSL TeamJul 28, 202612 min

Guides

EV SSL Certificate Price: What It Costs in 2026

EV SSL runs about $70–$400 a year in 2026, with My-SSL's from $49. What the deepest validation level buys now that browsers dropped the green bar, how EV compares to OV, the levers that move the price, and when the premium is actually worth paying.

My-SSL TeamJul 27, 202612 min

Guides

OV SSL Certificate Price: What It Costs in 2026

OV SSL runs about $30–$300 a year in 2026, with My-SSL's from $29 and an OV wildcard from $89. What the premium over DV actually buys, how OV compares to DV and EV, the four levers that move the price, and why the 199-day cap changes your calendar but not your invoice.

My-SSL TeamJul 26, 202612 min

Guides

What Is an SSL Certificate Warranty? What It Really Covers

An SSL certificate warranty reimburses the relying party — your customer, not you — if the CA mis-issues your certificate. What it actually covers, why hacks and breaches never qualify, the warranty amounts behind DV, OV, and EV, and whether the figure should sway your purchase.

My-SSL TeamJul 25, 202611 min

Guides

Wildcard SSL Certificate Price: What It Costs in 2026

DV wildcard SSL runs about $50–$225 a year and OV about $100–$420 in 2026. What actually drives the price, why EV wildcards don't exist at any price, when a wildcard beats separate certificates, and how the 199-day validity cap changes renewals (without changing the sticker).

My-SSL TeamJul 24, 202612 min

Code Signing

Open Source Code Signing Certificates: Who Qualifies and What They Cost

What Certum's Open Source code signing certificate costs (cloud from €49), who qualifies, the fixed "Open Source Developer" label, and how it compares with free SignPath Foundation signing, Sigstore and a Standard certificate.

My-SSL TeamJul 23, 202611 min

Security

wp2shell WordPress Vulnerability (CVE-2026-63030): Pre-Auth RCE, Affected Versions, and How to Patch

wp2shell is a pre-authentication remote code execution chain in WordPress Core (CVE-2026-63030, CVE-2026-60137) that abuses the REST batch endpoint. Affected branches, indicators of compromise, patching to 7.0.2 / 6.9.5 / 6.8.6, cleanup steps, and when a compromise forces a TLS key rekey.

My-SSL Security TeamJul 25, 202610 min

Security

OpenSSL "HollowByte" Vulnerability: What the July 2026 DoS Flaw Means for Your TLS Servers

HollowByte is a July 2026 OpenSSL denial-of-service flaw: an 11-byte malformed TLS ClientHello can hang a server's handshake worker and hold memory. Affected 3.x branches, how to check, how to patch on Debian/RHEL/Alpine and containers, edge mitigations, and why you do not need to reissue your certificate.

My-SSL Security TeamJul 23, 20268 min

Guides

How to Sign a Windows EXE on Linux or macOS (osslsigncode)

Sign Windows EXE, MSI, and DLL files from Linux or macOS with osslsigncode: install it, connect your hardware token or SimplySign cloud key over PKCS#11, hash with SHA-256, and add an RFC 3161 timestamp. The signature is identical to signtool's — the private key just has to stay on certified hardware.

My-SSL TeamJul 22, 202612 min

Code Signing

Azure Trusted Signing vs a Code Signing Certificate: Which to Use?

Azure Trusted Signing (now Artifact Signing) is $9.99 a month for 5,000 signatures, and Basic stays cheaper than Premium up to 23,000 a month. Yearly cost by volume, Microsoft's current eligibility list (individuals only in the US and Canada), what the service cannot sign or export, and when a CA code signing certificate fits better.

My-SSL TeamJul 21, 202611 min

All guides by topic

Every guide in the Learning Hub, grouped by subject. 205 articles covering SSL/TLS certificates, code signing, S/MIME, PKI and server configuration.

Code Signing

28 guides

SSL Basics

16 guides

Guides

63 guides

Security

56 guides

Comparisons

13 guides

Installation

25 guides

SSL Configuration

4 guides

How these guides are written and reviewed

Guides are written by Daniel Rehak and other contributors. Check each guide’s sources and date against the current issuer or platform documentation. My-SSL also sells certificates; product recommendations have a commercial relationship to this site. Send corrections with the page URL and supporting source.

Where a rule has a future effective date, the guide states what applies today and marks the future change separately. The most recently updated guide in this library was updated on Oct 22, 2026.

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