diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index b97e13f8..a15ad5ee 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -66,6 +66,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.getClearStack = jRequire.clearStack(j$);
     j$.Clock = jRequire.Clock();
     j$.DelayedFunctionScheduler = jRequire.DelayedFunctionScheduler(j$);
+    j$.deprecatingSpecProxy = jRequire.deprecatingSpecProxy(j$);
     j$.Deprecator = jRequire.Deprecator(j$);
     j$.Configuration = jRequire.Configuration(j$);
     j$.Env = jRequire.Env(j$);
@@ -1498,7 +1499,8 @@ getJasmineRequireObj().Env = function(j$) {
       runQueue,
       TreeProcessor: j$.TreeProcessor,
       globalErrors,
-      getConfig: () => config
+      getConfig: () => config,
+      deprecated: this.deprecated
     });
 
     this.setParallelLoadingState = function(state) {
@@ -3711,6 +3713,43 @@ getJasmineRequireObj().DelayedFunctionScheduler = function(j$) {
   return DelayedFunctionScheduler;
 };
 
+// TODO: Remove this in the next major release.
+getJasmineRequireObj().deprecatingSpecProxy = function(j$) {
+  const allowedMembers = ['id', 'description', 'getFullName', 'getPath'];
+
+  function isMember(target, prop) {
+    return (
+      Object.keys(target).indexOf(prop) !== -1 ||
+      Object.keys(j$.Spec.prototype).indexOf(prop) !== -1
+    );
+  }
+
+  function msg(member) {
+    const memberName = member.toString().replace(/^Symbol\((.+)\)$/, '$1');
+    return (
+      'Access to private Spec members (in this case `' +
+      memberName +
+      '`) via spec filters is not supported and will break in ' +
+      'a future release. See <https://jasmine.github.io/api/edge/Spec.html> ' +
+      'for correct usage.'
+    );
+  }
+
+  function deprecatingSpecProxy(spec, deprecated) {
+    return new Proxy(spec, {
+      get(target, prop, receiver) {
+        if (isMember(target, prop) && !allowedMembers.includes(prop)) {
+          deprecated(msg(prop));
+        }
+
+        return target[prop];
+      }
+    });
+  }
+
+  return deprecatingSpecProxy;
+};
+
 getJasmineRequireObj().Deprecator = function(j$) {
   function Deprecator(topSuite) {
     this.topSuite_ = topSuite;
@@ -9440,6 +9479,7 @@ getJasmineRequireObj().Runner = function(j$) {
     #globalErrors;
     #reportDispatcher;
     #getConfig;
+    #deprecated;
     #executedBefore;
     #currentRunableTracker;
 
@@ -9453,6 +9493,7 @@ getJasmineRequireObj().Runner = function(j$) {
       this.#globalErrors = options.globalErrors;
       this.#reportDispatcher = options.reportDispatcher;
       this.#getConfig = options.getConfig;
+      this.#deprecated = options.deprecated;
       this.#executedBefore = false;
       this.#currentRunableTracker = new j$.CurrentRunableTracker();
     }
@@ -9505,8 +9546,9 @@ getJasmineRequireObj().Runner = function(j$) {
         orderChildren: function(node) {
           return order.sort(node.children);
         },
-        excludeNode: function(spec) {
-          return !config.specFilter(spec);
+        excludeNode: spec => {
+          const proxy = j$.deprecatingSpecProxy(spec, this.#deprecated);
+          return !config.specFilter(proxy);
         }
       });
       this.#executionTree = treeProcessor.processTree();
diff --git a/spec/core/integration/EnvSpec.js b/spec/core/integration/EnvSpec.js
index d9224d40..f1b8504d 100644
--- a/spec/core/integration/EnvSpec.js
+++ b/spec/core/integration/EnvSpec.js
@@ -913,6 +913,7 @@ describe('Env integration', function() {
     });
 
     env.configure({
+      random: false,
       specFilter: function(spec) {
         return /^first suite/.test(spec.getFullName());
       }
@@ -920,13 +921,44 @@ describe('Env integration', function() {
 
     await env.execute();
 
-    expect(calls.length).toEqual(2);
-    expect(calls).toEqual(
-      jasmine.arrayContaining(['first spec', 'second spec'])
-    );
+    expect(calls).toEqual(['first spec', 'second spec']);
     expect(suiteCallback).toHaveBeenCalled();
   });
 
+  it('reports a deprecation warning when a spec filter accesses private properties', async function() {
+    env.it('a spec', function() {});
+
+    const reporter = jasmine.createSpyObj('reporter', ['jasmineDone']);
+    env.addReporter(reporter);
+
+    env.configure({
+      random: false,
+      specFilter: function(spec) {
+        spec.result; // deprecated
+        spec.id; // not deprecated
+        spec.description; // not deprecated
+        spec.getPath(); // not deprecated
+        spec.getFullName(); // not deprecated
+        return true;
+      }
+    });
+
+    spyOn(console, 'error');
+    await env.execute();
+
+    expect(reporter.jasmineDone).toHaveBeenCalledWith(
+      jasmine.objectContaining({
+        deprecationWarnings: [
+          jasmine.objectContaining({
+            message: jasmine.stringContaining(
+              'Access to private Spec members (in this case `result`)'
+            )
+          })
+        ]
+      })
+    );
+  });
+
   it('Functions can be spied on and have their calls tracked', async function() {
     let originalFunctionWasCalled = false;
     const subject = {
diff --git a/src/core/Env.js b/src/core/Env.js
index 701b4586..3e4fb741 100644
--- a/src/core/Env.js
+++ b/src/core/Env.js
@@ -371,7 +371,8 @@ getJasmineRequireObj().Env = function(j$) {
       runQueue,
       TreeProcessor: j$.TreeProcessor,
       globalErrors,
-      getConfig: () => config
+      getConfig: () => config,
+      deprecated: this.deprecated
     });
 
     this.setParallelLoadingState = function(state) {
diff --git a/src/core/Runner.js b/src/core/Runner.js
index db44c639..c6d69a7a 100644
--- a/src/core/Runner.js
+++ b/src/core/Runner.js
@@ -10,6 +10,7 @@ getJasmineRequireObj().Runner = function(j$) {
     #globalErrors;
     #reportDispatcher;
     #getConfig;
+    #deprecated;
     #executedBefore;
     #currentRunableTracker;
 
@@ -23,6 +24,7 @@ getJasmineRequireObj().Runner = function(j$) {
       this.#globalErrors = options.globalErrors;
       this.#reportDispatcher = options.reportDispatcher;
       this.#getConfig = options.getConfig;
+      this.#deprecated = options.deprecated;
       this.#executedBefore = false;
       this.#currentRunableTracker = new j$.CurrentRunableTracker();
     }
@@ -75,8 +77,9 @@ getJasmineRequireObj().Runner = function(j$) {
         orderChildren: function(node) {
           return order.sort(node.children);
         },
-        excludeNode: function(spec) {
-          return !config.specFilter(spec);
+        excludeNode: spec => {
+          const proxy = j$.deprecatingSpecProxy(spec, this.#deprecated);
+          return !config.specFilter(proxy);
         }
       });
       this.#executionTree = treeProcessor.processTree();
diff --git a/src/core/deprecatingSpecProxy.js b/src/core/deprecatingSpecProxy.js
new file mode 100644
index 00000000..eb1b583e
--- /dev/null
+++ b/src/core/deprecatingSpecProxy.js
@@ -0,0 +1,36 @@
+// TODO: Remove this in the next major release.
+getJasmineRequireObj().deprecatingSpecProxy = function(j$) {
+  const allowedMembers = ['id', 'description', 'getFullName', 'getPath'];
+
+  function isMember(target, prop) {
+    return (
+      Object.keys(target).indexOf(prop) !== -1 ||
+      Object.keys(j$.Spec.prototype).indexOf(prop) !== -1
+    );
+  }
+
+  function msg(member) {
+    const memberName = member.toString().replace(/^Symbol\((.+)\)$/, '$1');
+    return (
+      'Access to private Spec members (in this case `' +
+      memberName +
+      '`) via spec filters is not supported and will break in ' +
+      'a future release. See <https://jasmine.github.io/api/edge/Spec.html> ' +
+      'for correct usage.'
+    );
+  }
+
+  function deprecatingSpecProxy(spec, deprecated) {
+    return new Proxy(spec, {
+      get(target, prop, receiver) {
+        if (isMember(target, prop) && !allowedMembers.includes(prop)) {
+          deprecated(msg(prop));
+        }
+
+        return target[prop];
+      }
+    });
+  }
+
+  return deprecatingSpecProxy;
+};
diff --git a/src/core/requireCore.js b/src/core/requireCore.js
index 669bd244..9ce8aed3 100644
--- a/src/core/requireCore.js
+++ b/src/core/requireCore.js
@@ -42,6 +42,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.getClearStack = jRequire.clearStack(j$);
     j$.Clock = jRequire.Clock();
     j$.DelayedFunctionScheduler = jRequire.DelayedFunctionScheduler(j$);
+    j$.deprecatingSpecProxy = jRequire.deprecatingSpecProxy(j$);
     j$.Deprecator = jRequire.Deprecator(j$);
     j$.Configuration = jRequire.Configuration(j$);
     j$.Env = jRequire.Env(j$);